Wifi not working on one computer only

Hi guys, I recently ran into an issue where my main pc connects to the wifi but gets horrendous upload and download speeds. But my other devices, like my macbook and ps5 get great speeds. I reset the router, mad sure updates were up to date, and reset the Wi-Fi driver. But nothing fixes my issue. My only other idea is that my Wi-Fi antenna on the PC went bad, but I don't know how to test that. Any ideas would be appreciated.