here we go (because i "didn't have any issues so far."). Installed r7301 and when running speedtest on my phone through 5GHz the router stops working (no web, no ssh, reboot needed). This happens when speedtest starts the upload phase. Also tested after reseting the configuration of the router - same thing.
Tried logread -f before starting the test but nothing was logged. Which logs to check (there isn't anything interesting in /var/log or /tmp/log)?
I'll be reverting to older build and report back.
Update:
r7188 - not affected
r7274 - affected
r7301 - affected
I'll check if i have something specific which can cause the issues.