I had this exact same problem when I switched from windows to fedora KDE a couple months ago. The solution for me was to install the proprietary nvidia Linux drivers. The OS has some already bundled, but I found some other people online have this issue until they switched drivers and I gave shot. Im on my phone so I dont have any links or much else to give you rn, but if you need me to provide more info I can when I get back on my PC.