Flint 2 gutting wired speed by a ton

Routers
1

Over the last 3 months my wired internet speed has been dropping from 1300~ to 300~ and then over time decaying down to 70~.

Over those three months, I now have a new 2.5Gbps motherboard, new ethernet cables, two new $200 modems, and played Russian roulette with Xfinity support where losing is actually winning in my book.

I’ve directly connected to the modem before ofc, but since it’s sporadic it’s hard to catch, but now I’m almost utterly sure it’s the router. Weirdly, my upload speeds are fine, and wifi doesn’t seem to get hit anywhere near as hard, just wired speed which has two devices my NAS and my desktop.

I’ve tried to replicate what causes it to no avail, it just does it at random. I already emailed support… missed my window to return it to Amazon unfortunately but before I waste money on a new router I thought I’d see if anyone magically had something that might work, or how hard these guys would fight to not have to replace the router.

It’s a Flint 2, the latest beta firmware 4.8 I believe, just upgraded to the beta firmware to see if it would help (it did not).

Thanks.

2

Did you try to run the speed test on the router itself to outline that it's not a router issue? See GL-MT6000 Slow Upload speed - #2 by admon

4

Yeah reddit led me to the thread here and I went to the github.

5

Try the GL op24 firmware variant. Should that fail I'd flash 'pure'/'vanilla' OWRT 24.10.2... just be sure to use their sysupgrade tagged releases. Pull a backup of your current config in LuCI -> System -> Backup / Flash Firmware beforehand.

6

Thanks for the suggestion, I have tried both and still get half or less of my maxium speed. For some reason the router is throttling the full available speed even on default settings with nothing carried over. Using an older Asus router (which, ironically, used OWRT…) results in no issues as does connecting to the modem directly…

7

You mentioned two new modems but did you check if this problem happens with their supplied XB8 gateway in bridge mode?

8

What I'd try is installing OpenSpeedTest locally on the Flint v2 or iperf3. See the below thread for notes on both. Then I'd set a static IP (see GL docs) on the WAN interface (eg: 192.168.10.1, Netmask 255.255.255.0) & assign your network interface 192.168.10.2, 255.255.255.0. It should then be connected as a 'cross-over' link. Then bench mark three or five times so you have some numbers to report to GL staff.

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