@Rocco1051 

Hi, It is suggested to install the following driver first:

Realtek Chipset Driver for Archer T2U(Nano/ Plus)/T3U(Nano/ Plus)/T4U(Plus)/T4UH/T9UH (Win7/Win10)

Is your main Deco also WiFi 6? How about the overall internet bandwidth?

Archer T2U Plus is not a perfect choice for online gaming. If the main router is WiFi 6 or higher, you could consider our WiFi 6/6E/ adapters:

https://www.tp-link.com/en/home-networking/adapter/?filterby=6093%7C5730

Best regards.