serjflint wrote

I have router TP-Link Archer C20 (RU) v4. When downloading files on speed less than 50 Mbit/s everything is OK. I purchased package from my provider with the maximum speed 100 Mbit/s and now my router freezes and becomes unresponsive when downloading large files (over 10GB). After manual reboot it works smoothly for some time and freeze again. When I manually set the maximum download speed at 50 Mbit/s it works perfectly. I even flashed OpenWRT but the problem still persists. I can't even see logs on the moment of the freeze.

try unplug the wan cable and plug in again when it freezes, would it work?

Reboot is easier for me (cable it too tight-fitted). Still I want to solve the problem, not symptoms. I don't need any freezes