Archer T4U AC1300

Hardware version: 3.20

Firmware version: 1030.38.712.2019

Win 10 ver: 20H2 (19042.804)

I bought it 2 days ago. My adapter keeps losing connection while downloading large files with high speed at 5 Ghz. There is no such a problem on 2,4 Ghz. I thought about internet problem but I checked on my laptop with its own network card (also 5Ghz, the same network, the same distance) this issue doesnt exist. 

Sometimes the connection doesnt return, I have to disable WiFi and then turn it on. 

It looks like this:

Reply from x.x.x.x: bytes=32 time=17ms TTL=51
Reply from x.x.x.x: bytes=32 time=20ms TTL=51
Request timed out.
Request timed out.
Reply from x.x.x.x: Destination host unreachable.

Reply from x.x.x.x: Destination host unreachable.

Reply from x.x.x.x: Destination host unreachable.

Reply from x.x.x.x: Destination host unreachable.