Diagnose Wifi adapter loosing connection

I have this USB Wifi adapter that keeps discconecting from internet. It just loose connectivity. it keeps working ( has a green led ) and never loose USB connectivity.
The device is a TP-LINK 720N and it uses Atheros 9270 chip. I have been told that maybe it was a conflict between Windows 10 and device driver so downgraded to Windows 7 and it fails the same way with the manufacturer’s driver.
Maybe some of you knows a way ( or tool) to troubleshoot or diagnose this device to identify what is the root cause of connectivity loss. Thank you in advance for it !