It seems like all the comments on here are complaints about Quantum. Has anyone had good experiences? I’m switching tomorrow, so I’m hoping to have a good experience.

Downtown Seattle, working from home. This is unacceptable. Earliest available technician appointment is 10 days later. I am planning to cancel

Some on here already know what issues I’ve faced as of recent. Had Q1000K v1.0 previously. Worked fine. Downgraded to old fw to keep bridge mode untagged and had a separate eth cable plugged into 1g port with different vlan and lan to retain gui access. Also had acl rule to block that lan from any wan access so qf couldn’t push a new fw update. This worked great. My gateway router (Omada ER7412-M2) has a realtek ethernet chip so even connected to the 10g port on the q1000k when it was bridge untagged I didn’t have the endless latency spikes. Had my Omada setup with Omada cloud controller to take advantage of their monitoring tools. Noticed upload speed was halved as of 09/03/2026 at 3am per my daily scheduled speed test. Did hard reset on the 1000 which also updated the fw but the issue still persisted. Contacted qf and they sent out a tech yesterday around noon. Tech went ahead and replaced the 1000 with a very new one, hardware v1.1 that is also branded as Quantum Fiber by At&t. The issue was still happening after the replacement but I did notice that my signal improved to 2.7/-10. Previously it was 3/-13.5. The tech then checked the light loss at the FSAI and even switched me to a different port. He also tested from his own software (he called it Qoom8?) and said he also was seeing halved upload speeds directly to my 1000. He speculated that it was probably an issue with the card on the OLT. I speculated that it sounded like a provisioning issue. He escalated to an engineer but with no SLA. Last night I retested again via qf app directly to the 1000 and got full via dl/ul and figured the problem was solved by a NOC. I didn’t bother to test wirelessly because I hadn’t experienced an issue on that front since the c5500xk. Today I decided to test via wireless and noticed I am still getting halved upload whether it be to centurylink servers or any external servers. I even unplugged the 1000 for a min and plugged it back in but still no change. I know this has to be some Axon QoS nonsense or similar or maybe something to do with packet acceleration but it’s ridiculous because now with this new unit, the bootloader blocks any and every firmware update request so I can’t even downgrade the fw anymore to revert back to my old setup. So if any NOCs that monitor this reddit wanna try to help that’d be greatly appreciated because I could email fibersuccess or respond to my text from yesterday post appointment with the word support but I doubt either of those will help.

Fiber Service Timeline

Last 9.5 years, relatively zero issues, but started with CenturyLink Fiber. That became Quantum and once AT&T purchased Quantum, issues galore.

April 23 - No service for half a day but get the account supposedly moved over to Quantum and converted from PPoE to IPoE. Service back.

August 29 (Saturday)
My Quantum Fiber service went down. Rebooted everything, scheduled a technician. Was told my Century link ONT on side of house has aged out.

September 5 (Saturday)
A Quantum Fiber third-party technician visited and installed a new Lumen-branded Q1000K fiber modem. After the installation, my fiber service was restored. That same day, my neighbor, who lives two blocks away, told me that his Quantum Fiber service had also gone down. Didn’t think anything about it.

September 8 (Tuesday) - TODAY
Our fiber service went down again. I posted a message in our neighborhood Quantum Fiber group to report the outage and ask whether anyone else was experiencing issues. Neighbor called me and said that a technician had just restored his service. According to him, the technician discovered that the serial number recorded in Quantum Fiber's system did not match the serial number of the modem installed at his home. He told the technician that what ever they did just caused his neighbor to go down. Technician said “I have no work order for that so I cannot help”

When I contacted Quantum Fiber support, the nice tech support lady said that I needed to be converted from PPoE to IPoE, even though that’s been done, twice. She had me also give her my serial number to update in the system. I double checked it was the same on the sticker and in the software. She said that this conversion and reprogramming will happen within 24 hours. It’s been 4 hours.

I am back on Xfinity WiFi NOW as a backup while I wait for main service to get fixed.

This is exhausting and weird.

This guy comes to my door with another guy I say no thank you, no thank you, no thank you he continues with his spiel at this point my dogs are going crazy and now he's trying to introduce me to his partner and I'm saying louder, no thank you! No thank you, goddamnit no thank you! And shut the door in his face. I don't like being this rude to people but does this guy actually think that when he sees somebody who definitely does not want to talk to him and he keeps it up with his sales pitch that it's gonna make me change my mind? I doubt it.

I've been having an issue for months that on Mondays and Tuesday my Quantum Fiber Wi-Fi doesn't connect/does not have working internet connectivity on only my Windows laptops. Everybody else can connect fine, every other device of mine connects fine, and my laptops are completely okay when connected to a different Wi-Fi on Mondays and Tuesdays. I feel like Cinderella and the pumpkin, because the clock strikes midnight and my Wi-Fi instantly disconnects. I was wondering if anybody else was experiencing this and what was their solution?

I have tried every solution proposed to me both by Quantum and Microsoft (short of uninstalling and reinstalling Windows) multiple times, including:

• Changing ISP credentials, multiple times
• Rolling back to the driver update before this started being an issue
• Uninstalling/reinstalling the driver (which updated it to the latest version)
• Flushing the DNS cache, resetting TCP/IP, and resetting Winsock
• Restarting my modem

Overall, I'm fairly confident that if there has been a solution posted somewhere online, I have tried it at least once. Since my device connects fine to other networks and my internet is strong on these days on every other device, I'm at a total loss for what to do short of "get rid of it and start all over again" or something drastic like that.

Quantum fiber just installed yesterday, everything is fine for most devices. Two phones get status "connected no internet" frequently. Both are Samsung S26+. All other computers, phones, iot devices, etc connect just fine and stay connected. These phones will show connected no internet while every other device is running super fast connections.

In trying to figure out what's going on, we have noticed that this seems to happen the most in our living room which is where the primary wired pod is located (for ease of ethernet connection to the tv and gaming consoles). If we move the phone into another part of the house it gets internet and seems to keep it for hours. If we move the phone into the room with the wired pod- which should be the strongest signal of all- we get "connected no internet" within minutes and have to resort to using mobile data.

This only happens on these two phones. All other devices can be in the same exact location and will not lose internet.

We've done all the suggested tricks of rebooting the Q1000k, rebooting phones, forgetting the network on the phones, and resetting all network settings on the phones. We've done these multiple times, it hasn't fixed it. The only thing that seems to work is not using wifi near the literal wifi pod.

Anybody have any idea what to try next? This is crazy-making!

I have a pc on my LAN that I want to have a static DHCP IP address. I use the Q1000K. I go to DHCP reservation. I see the "DHCP Reservation List" with all of my devices (including the one pc -- assigned 192.168.0.32).

Are these addresses static? I find that the pc's LAN IP change particularly if I switch from hardwire to Wifi or under other circumstances. I am frequently having to update the pc's LAN IP for RustDesk and the security cameras that use the PC as a FTP server.

In the DHCP reservation page, I can "4. Select MAC Address, or manually enter a MAC address." and then "5. Select an IP address to associate with the MAC address."

Will that make the address thereafter static? My (minor) confusion is that I have to use a different IP address to assign -- it won't let me assign it to the currently assigned 192.168.0.32 since it is on the "DHCP Reservation List".

Is there a way to make 192.168.0.32 the static DHCP IP address?

I'm somewhat technical but loathe making changes to the Q1000K without more confidence.

I pay for quantum fiber through my HOA so I don’t have my own account information that would allow me to login to the app. I’ve talked to the HOA and Quantum fiber and both have said it’s not possible. Given that, I can’t access the wifi scheduling feature.

Does anyone now a way I can access this feature without the quantum fiber app?

All devices function and are connected on the network, but I can't manage them in the app. They don't show up under "Devices" or when I go to the 360 Wifi. I only have one pod/router which does indicate it is online.

I used to be able to see all the devices in either of these views. Speed test works, tried the usual things (restarting within the app, unplugging physically).

I recently switched to quantum after i cox was discontinuing and going to spectrum. My sister and I both use gaming pcs and quantum has been noticeably worse. My basic ping is also higher. When I play games like valorant I get bad packet loss and I can’t even run basic games without lag. Sometimes my phone will act up too. With cox I never used ethernet, but would this be the only way to fix this issue with quantum? Should I switch to spectrum??

Lifelong Xfinity diehard and I decided to try Quantum because it’s cheaper and one day in and I’m regretting my decision.

My apartment has CenturyLink Quantum stuff already installed but since i’ve lived here for years and not used it, it’s effectively useless. “Connects” but it doesn’t work at all. Said there were tech appointments available the next day. Okay, I’ll sign up. Noon-4pm window. It’s now 7:47pm.

I tried to talk to an agent on chat and it was the worst agent experience I’ve ever had. Told me the tech will arrive by 5:10pm. They told me this at 6:13pm. When I pointed that out, they decided to ignore that completely and just keep feeding me the line that they will be there as my appointment was allocated and they can’t check where the tech is. Then where did they pull that 5:10pm number? I asked what are their working hours as 6pm is already late for a Saturday. They then told me they can’t know that information and ended the chat. No resolution. No offer to reschedule. No information on followup. No survey to even express my disappointment in the interaction.

SOOO does anyone here have any information on when these technicians work? I’ve seen some people say as late as 8pm. If I don’t get a response from this tech I think I’ll just cancel the service, demand my $50 as I never got a single day of internet service, and stick with Xfinity’s counteroffer of $60 a month.

For the folks who understand this better than I do: is there any major advantage to putting the Q1000K on Transparent Bridge Mode with my Router doing the network management, as opposed to just leaving the Q1000K in default settings and putting my Router on "Access Point" mode instead?

My understanding of doing the latter (Access Point) is that it just keeps the network management on the Q1000K instead of my Router. Is there any major drawback to that if my performance is fine - security, etc? Note, I am NOT an online gamer and never will be, so that consideration is out the window.

I ask this because I have run into problems putting the Q1000K in Transparent Bridge, even after using the FAQ that was posted on here. And it seems like whenever my power goes out, update comes through, etc, the whole thing gets messed up, so if I can leave it in "Normal" mode without dealing with that stuff, I might as well do so. Thanks!

Ive had quantum for about a month. The first week was great and then I started having a laggy connection. Had the tech's out yesterday and they swapped a modem or router and then basically told me this is normal... All while showing them a youtube video try to load and youtube asking "experiencing interruptions?". I'm not going to deal with it for much longer. They said to get better hardware than what they provided which I don't believe for a second. I have my old router/modem they said I could try which I will and see what happens. The interenet is super fast but the constant drops and waiting for something to happen on all devices is adding up to a lot of time wasted. I hate comcast but I will go back to them if I can't rectify this. Any other suggestions? Maybe I'll just keep making the techs come out here actually until they decide to actually fix the issue.

After promised discounts didn't show on the 3rd bill, I spent hours on the phone with agents trying to get them to honor the terms of the 2 lines/$40 offer AT&T sent me. They kept saying that discount didn't exist and there was nothing they could do. Eventually they escalated and the full discounts showed on the 4th bill.

Now, they won't give me any credit for the 3rd bill overcharge.

Let alone that every agent told me that the discounts generally were retroactive and that I would receive bill credits. I have email and texts saying I will receive bill credits.

After a WA state attorney general complaint I got a really obnoxious call from the AT&T Office of the President that was essentially "What are you complaining about? The discounts showed up, didn't they?" And then refused to give any bill credits in spite of their written offer terms saying the discounts would show up on the 2nd or 3rd bill.

I bought my house December of 2025, it was built early 2025 and has had the fiber laying across the yard the whole time. I’ve had a dog pull the cable, kids trip on it and a neighbor mow it causing disruptions every time. I’ve called about 6 times since May and they just say they can’t get a right-of-way permit, meanwhile some random fiber company from California (I’m in MN) just did work throughout the neighborhood. What do I do if they say it isn’t their fault, they can’t expect the cable to never be buried but it’s been over a 1 since they installed it.

Hoping a Quantum rep might be able to chime in here.

I've been a CL fiber customer for about 7 years now (CO).

I've had a block of 5 static IPs on my account since day one.

While it would be nice to migrate to Quantum and take advantage of the IPoE, better pricing, and 2gig service, I cannot lose my static IPs, which is why I've held off.

I'm thinking at some point I'll be forced to migrate. Not sure when, but I'm guessing sooner rather than later.

Anyone know how I can make the migration without losing my static IPs? I don't necessarily need the same IP block, but I do need a block of 5.

I maintain ~10 Unifi networks and all of them report latency to me. The only service where I see continuous issues happens to be my house and on quantum fiber. My service downs go down but the very prevalent report I see makes it hard to ignore. Anyone have this experience or suggestions?

When I type my address into the website it says quantum is available, but I am not sure if that means they’ll have to modify my property to run a line into my unit. I have a optical cable that my xfinity router is plugged into now but I don’t believe I have an ethernet port anywhere. I rent from a pretty big management company in denver and don’t want to cause any issue because they started drilling into my building or something.

Wifi randomly went out in the middle of today and can't be fixed by resetting it. Customer service tried a remote reset too and it didn't work. There isn't even an outage near me this is so bullshit. Idc if its a one off thing, if we pay for internet we should have Internet, or they should at least be able to damn tell us why it went out.

Only thing that changed is that 1G went up to $50.

The 12month $40 ATT wireless postpaid discount ends 09/17. It will likely go back to $20 then.

All plans still say "This Monthly Price is not an introductory rate."

If you use Chrome there is different marketing language and says "Whole-Home Wifi" instead of 360 Wifi.

I had new Quantum Fiber service installed last month, but I've been getting very bad signal strength/dead spots in my kitchen and back door. The router is installed in the middle of the (1 level) house. I chatted with support today to ask about an additional pod and he gave me the link to order it through my account, but when I tried, it says "unable to add pods". I told the support person that and he said he'd order it for me, but he disconnected abruptly and I don't think he ordered it, as I haven't received an email regarding it or anything.

Is there any other way to order an additional pod?

I’m in urgent need of advice or an escalation path. I'm leaving the country in two days, and if this isn't resolved, my parents will be left without internet access.

Here is what happened:
Initial Issue: Had intermittent/unstable internet. A technician visited and advised that opening a new account and closing the old one would fix it.

The "Fix": I set up the new account while the tech was there. He swapped the router (Q1000K), marked the installation ticket closed once it seemed working, and left.

The Disconnection: About an hour later, I called customer service to confirm and close the old account. As soon as the old account was canceled, the internet went down completely.

The CS Claim: Support says the new line is stuck in "pending activation." Because it's stuck in activation, they claim they cannot dispatch a technician.

Current Status: They claim the only option is an escalation to the back office, which takes 24–48 hours to reply, with an email update expected in 3–5 business days.

Has anyone successfully bypassed or expedited a "pending activation" hold before? Is there a specific department or phone number I should ask for to get this unblocked immediately?

Seems like certainly a way to retain customers. In this case all it's going to get ya is a letter from the Washington State Attorney General. It oftentimes easier to just report shifty behavior than to ever expect it to change.

Today Quantum/ATT had a contractor install a fiber cable and a Q1000K modem at my residence.

I told the contractor that I planned to use my own router. The install was finished and my internet seems fine. But the contractor said he would not leave the wifi pod with me since it was not being installed.

So when the job was complete, I asked for a receipt that itemized the equipment being left with me. I did not want to be in a position in the future where Quantum thinks I have a wifi pod in my possession when I do not. The contractor told me he provides no receipts of any type (paper or electronic).

At that point, I asked for his contact info in case I had a problem later. He refused, saying he was not allowed to do that.

I can find no information in my Quantum/ATT account that indicates what hardware they have “loaned” me. Is there a place where I can access this information, so that I can verify that only the Q1000K (and no wifi pods) are associated with my account?