have you typed dxdiag into search box and run the program. also you will have some old card drivers in a folder in c drive , they stay there even if you delete them from download folder. I would recommend you try a copy of an old driver because years ago drivers were made for all individual cards but now they are made for "series" and sometimes they might not work on your particular card..... I use an aquarium screen saver program as a tester and if a driver makes it do odd things I know I will have a problem with something else.
AMD Threadripper 2990WX review