Windows auto updated a few days ago , it has a habit of overwriting your chosen drivers with its “best fit”
As @ged_hickman1 suggests above get the OEM driver from your Video Card manufacturers site
Otherwise , try and ethernet cable even as a try if its not practical . A LARGE library is going to struggle on WiFi , Roon moves lot of data. Also a 1.8ghz processor may struggle with a BIG library. Define Big (eg mine is 170k tracks)
If that fails you may have a db corruption , see this thread from support as well (a sticky thread seems to have gone missing !!)