OS: Windows 10 2004.
Simple... Most times the adapter will keep disconnecting (making sounds of USB connected/disconnected) if I select a 5GHz Network... From other search I've discovered that one of the problems is because this driver (on TP-LINK's website) is too "old" and windows keep trying to use a "newer" one. If I try to update the driver to the correct one (downloaded from TP-Link), sometimes the adapter will freeze, or keep restarting, or switch back to the default driver. So I have to unplug, replug, update driver again until it finally works.
The other problem is that sometimes I'll suspend or leave my PC unattended for some time, and then the connection is lost and I have to try my luck again with the cycle described above. I can't believe there's been 2 years since last driver update, because it's pretty obvious these won't work for 5GHz at all (various reports)... It doesn't even work properly for 2.4GHz because the connection is spotty (stuttering) if using the default driver.