@TriATK Could you please download the driver to use try can help you solve the problem or not. Download link:https://static.tp-link.com/2019/201911/20191128/Archer T3U_beta_U2_U3_5G unstable...

@kflem1 Also, there is an advice, please try to enter the safe mode of the window to uninstall the old driver and install the new driver, it may help. How to get into Windows safe...

@kflem1 Could you please send me some screenshot about how did you uninstall the driver? According to our experience, the driver can be removed from the device management interface or control panel....

@Verndroid Will the speed improves if you try to change to another PCI-E port? What if the network card is installed on another computer? For the time being, I have no way to explain why the download...

@kflem1 Could you please try to uninstall the firmware in the control panel? Please check case 3 of the data:https://www.tp-link.com/us/support/faq/2252/ Have a nice day!

@Eugene-CHN Could you please try to put the 727N in another USB port to use? Will the problem get better? One more, could you please try to go to the Control Panel>>Network and Internet>>Network...