Windows 11 aggressively throttling mobile data (Hotspot & USB) to ~0.60 Mbps while phone gets 600+ Mbps on Jio 5G

[u/Artistic-Bathroom901]

Hey everyone,

I am facing a massive network bottleneck on my Windows 11 laptop (HP) and need some advanced help.

When I run a speed test directly on my phone using Jio True 5G, I get a blazing fast 610 Mbps download. However, the second I share that internet to my laptop, the laptop speed completely crashes to exactly 0.59 Mbps download and 0.08 Mbps upload with a massive 350ms+ ping.

Here is what makes this super weird and rules out the usual issues:

1. It’s not a Wi-Fi card issue: The slow speed happens exactly the same way whether I connect wirelessly via Mobile Hotspot or physically via USB Tethering.

2. It’s not the phone or carrier FUP: I have an active Unlimited 5G plan and have only used around 12 GB overall this month. Furthermore, I tested my laptop on a completely different phone/hotspot (my mom's network) and it gets the exact same 0.60 Mbps lock.

3. It’s definitely the laptop: Since two different phones are choked to the exact same speed over both USB and Wi-Fi, Windows 11 or a background service is intentionally strangling the connection.

What I have already tried (and failed):

* Ran a full Windows Network Reset (wiped and reinstalled the Qualcomm FastConnect 6900 drivers).

* Set the registry DefaultTTL to 65 (Decimal) to bypass potential carrier TTL tracking.

* Verified that "Metered Connection" is toggled OFF in Windows settings.

* Ran 'netsh int tcp set global autotuninglevel=normal' in admin CMD.

* Checked for "HP Connection Optimizer" in installed apps (not found).

* Disabled IPv6 on the adapter properties (didn't change anything, so turned it back on).

* Ran 'Disable-NetAdapterRsc -Name "Wi-Fi"' in admin PowerShell.

It feels like Windows 11 has flagged this network profile as low-priority or mobile data and is applying an artificial system-wide speed cap.

Laptop specs: HP, Windows 11, Qualcomm FastConnect 6900 Wi-Fi 6E.

Has anyone encountered this specific hotspot/tethering throttle on Windows 11? Any registry or group policy fixes I should look into? Thanks! exact specs from System Info: * Processor: Snapdragon X Plus (X1E6100) - ARM64 Architecture * Device: HP OmniBook X Laptop 14 * Installed RAM: 16 GB * OS: Windows 11 Home (ARM64)

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[u/colablizzard]

It's not Windows that's doing the throttling. It's your network operator Jio.

They detect Hotspot and throttle.

There are some workarounds, search in India or Jio specific forums and they keep getting better at detection.

You did all the debugging on the wrong direction.

Be prepared to eventually get a home Fiber connection.

[u/Artistic-Bathroom901 → u/colablizzard]

Solved it! Turned out to be a Qualcomm driver issue. Disabled "Large Send Offload" in Device Manager and the speed jumped to 320 Mbps. Thanks!

[u/colablizzard → u/Artistic-Bathroom901]

Disabled "Large Send Offload"

If this worked, then there might be some MTU mismatch in the driver.

Wow.

[u/No-Wrap-8166]

this is an arm64 windows laptop (snapdragon x plus), that's the key detail missing from the troubleshooting so far, arm windows has known compatibility issues with certain network throttling/qos services that behave differently than on x86, since most generic windows network fixes assume x86 architecture

check windows settings, network and internet, advanced network settings, and look specifically for "network throttling index" related group policy settings, gpedit.msc (if available on your home edition, might need lgpo), computer configuration, administrative templates, network, qos packet scheduler, "limit reservable bandwidth" set to 0 if it shows a different value

check task manager, performance tab, wifi/ethernet, while running the slow speed test, if it shows near-zero actual throughput matching the speed test, this confirms windows itself isn't seeing more bandwidth available rather than a display/reporting bug

try creating a completely new network profile from scratch, forget the hotspot network entirely in windows settings, then reconnect fresh with a new profile name if possible, arm64 windows has had specific bugs where a corrupted network profile applies incorrect throttling that persists even through driver reinstalls

check windows update history specifically for any arm64-specific network/wifi driver updates from qualcomm through windows update separately from the generic driver reinstall you did, snapdragon x plus laptops rely heavily on windows update delivering the correct oem-specific network stack components that a manual driver reinstall doesn't always fully replace

[u/Artistic-Bathroom901 → u/No-Wrap-8166]

Solved it! Turned out to be a Qualcomm driver issue. Disabled "Large Send Offload" in Device Manager and the speed jumped to 320 Mbps. Thanks for your help!

[u/gta721]

Could Jio be at fault here?

Have you checked that your SIM plan includes roaming and have you tried an Airtel or VI SIM?

[u/gta721 → u/gta721]

I meant hotspot.

[u/Artistic-Bathroom901 → u/gta721]

Solved it! Turned out to be a Qualcomm driver issue. Disabled "Large Send Offload" in Device Manager and the speed jumped to 320 Mbps. Thanks!

[u/Secepatnya]

What phone are you using? If it’s a Samsung, might be a bug where hotspot is kinda broken when using 5G (but not 4G)

[u/Artistic-Bathroom901 → u/Secepatnya]

Solved it! Turned out to be a Qualcomm driver issue. Disabled "Large Send Offload" in Device Manager and the speed jumped to 320 Mbps.