TP-Link Archer T9UH Version 2 disconnects, turns off and on on 5 Ghz network

I have a T9UH Version 2 Wireless adapter, which i bought recently. Every 1-2 weeks it starts to go into a disconnection cycle on 5GHZ: disconnects, turns off, then turns back on and doing this after it entered the cycle. As far as i’m right the problem is connecting to 5GHZ only. A pc reboot sometimes helps, but sometimes not. Sometimes changing the USB port (plugging it to another USB port) helps too. But it happened none helped, then i changed to network router and that helped. While these things are happening, i have no problem with any other wireless devices, so there is no problem with my WIFI network.

Before this t9uh i had a t2uh adapter and it had the same problems on 5Ghz, that is why i suspect motherboard problem maybe?

I tried:
-different drivers
-different ports
-changing channels on wifi router
-tried a driver which was recommended here:
https://sites.google.com/site/bangaroovh/searchindex/tplinkdriver

None of these have any effect, after a while the problem is coming back. Now it was okay for 10 days, and today it started again, i changed ports now, and it is working again. But this is just a temporary solution. What can be the cause. I suspect it is something with my motherboard. If yes can sy help me how to find that out. My motherboard is:
GA-B250-HD3P-rev-10

And operating system is: Windows 10