I get internet from outside with Mikrotik to my flat. I distribute this internet as wifi with tp link. Mikrotik and Tplink dhcp off. devices taking ip directly from Zyxel modem. When i use on Tplink cable or 5 ghz i get full speed 100 mbps. But when i use 2.4 ghz i get 1 mbps or more less.
this problem started when i updated mikrotik 7.11 software. i downrage back any other versions still problem continue. İ tried 3 diffirent acess point all 2.4 ghz same problem very slow.