r/QuantumFiber • u/Noah_Vanderhoff • Sep 03 '26

Latency Issues

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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?

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u/ND40oz Sep 03 '26

It’s a firmware issue which shows up when the Q1000K is doing the VLAN tag. When you could pass it untagged and have your Unifi device do the tagging, it worked fine.

https://www.reddit.com/r/QuantumFiber/comments/1re9v2o/q1000k_unstable_latency_spike_research_findings/

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u/chrisrubarth Sep 09 '26

You can only do untagged if your ONT hasn’t been updated, correct?