@Jack32 Good day, Thank you for your detailed info and sorry for the late update. The driver should be up to date. Here are some suggestion you could try: Turn off power saving mode for the adapter...

@artihero Hi, Sorry for the late update, you could try some suggestion here: Disable old Wireless adapter Try a different Wi-Fi channel on main router such as channel 1,6,11 Here is a public driver...

@Fede411 Hello, Sorry for the late response, it is recommended to reinstall the latest driver on official driver for T4E. If your driver is the latest one, here is a chipset driver which you could...

@Toastylll Hello, Sorry for the late update, here is driver for T4U Plus : https://www.tp-link.com/en/support/download/archer-t4u-plus/#Driver On wireless mode , please check if you could find...

@Ralph_alpha Hello, Sorry for the late response, do you mean the 5Ghz signal becomes very weak on the computer using Archer T3U Plus, what is the signal strength on 5Ghz right now? How about the...

@danielmachado Hello, Sorry for the delayed reply, Here is a newer chipset driver for T3U/ T3U plus which you could give it a try:...