@KevKiwi This adapter is only a Wi-Fi interface. If you are experiencing this same issue with a hardwired connection it could be related to the ethernet network adapter driver for your computer. The...

@LOrD77 Yes, that is the same solution that I used. It's absurd that this is the fix instead of a driver change. I'll avoid TP-Link products in future.

@vectorx5000 @Tony Never mind, I am back to having the same issue, even after reinstalling that same driver. I have no idea what to try next. Additionally, now even restarting does not fix the issue....

@vectorx5000 @Tony I contacted support who told me to download this driver: https://static.tp-link.com/2019/201911/20191128/T4E.zip I installed it following this guide:...

@Tony I neglected to mention it is not a pre-built PC, but one I assembled. This is the only wireless card in it, and rebooting into safe mode with networking disables the card. I can't use any of...

I recently installed an Archer T4E adapter in my system and have been having ping spikes of up to 3000 ms. They occur from this PC to an outside network (for instance pinging google.com) and also to...