Problem With My PC & Network

Hi All,

So recently upgraded router to WiFi 7 and all was well for first couple of days now the gaming desktop which was built has decided to give up on life and not want to connect to steam, discord anymore or games. It will connect to Google and YouTube but very slowly however and that is either on WiFi or on ethernet.

Could it be my WiFi card causing the issue Its a 8852be? Or what issue could be causing it as I have flushed the DNS and reset pc and router etc?