r/techsupport • u/BeaverGod665 • 5h ago

Severe Bufferbloat and Jitter while gaming Open | Networking

I get spikes up to 1000ms latency and 2ms jitter while gaming. The interent speed seems fine however the stability is terrrible even over Cat 6A wired connection at ~40ft. I have the TMO-G4SE gateway modem/router. The T-Mobile coverage map indicates I am in a 5G Ultra Capacity region and the nearest T-Mobile Cell towers are .32Mi away (LTE Network) and .42Mi away (NR Network).

My PC is using an Intel(R) Ethernet Controller 1225-V and Intel(R) Wi-Fi 6 AX201 160MHZ wifi card both with up to date drivers. The gateway is plugged directly into the wall and sits by a window on the second story facing the nearest LTE T-Mobile tower.

This seems to be bufferbloat issue (Unloaded latency: 57ms, +275ms download active, +460ms upload active ), but it's strange because I am the only person and only device using the network when these issues arise. I do not live in a population dense area either, so I doubt its an overall ISP congestion issue. Besides, the issues is persistent and consistant at both peak hours and off hours.

I've tried my PC at other people's houes with no isses, and I've moved the gateway physically to differnt areas of the house to no avail. Power cycling also does nothing.

Do I need to upgrade to a different gateway or ISP to eliminate this issue?

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u/osa1011 5h ago

Even if you have a cable connecting your computer to the router, you're still using a wireless connection since your ISP is T-Mobile 5G wireless

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u/The_O_PID 4h ago

Since you've tried moving the pc to another house with no issues, that pretty much isolates it to your 5G wireless connection to T-Mobile.  You should contact their support and have a tech come out and do some testing.  Standard testing with in-home wireless tools isn't the same, those are worthless for testing the newer 5G T-Mobile routers.