Finally i fixed the issue by fixed the chanel and the chanel wide to 80 mhz. When I set to 260mhz i have the issue like othet and I described. so, probably on auto mode, when it switched to 260 I...

@broxtor I have the same issue. I don't have any issue on 2.4ghz or wired but on 5ghz i lost internet access after some hours. I'm trying to change some parameters to see if I can fix it myself. I...