I am not entirely computer savvy, but I just replaced my NVidia card with a AMD Radeon RX 5700 XT and now I can't run my FPS games like OverWatch2 and Apex Legends?
My graphics card is fine and it not overclocking, and my processor is a: Intel(R) Core(TM) i3-7100 CPU @ 3.90Hz (4CPUs), ~3.9GHz. but that is maxing out at 100% when I'm watching the performance gauges. When I run World of Warcraft Classic it's now at 86% on average.
I've changed nothing in my computer except my graphics card and I used to stream and play all these games at maximum settings with my stream at 4000 Kbps.
I think my computer is trying to somehow pull from it's intergrated graphics card instead of my new one, and I have all the drivers up to date.
What nvidia card did you have? Sounds like you went from being GPU bottlenecked to CPU bottlenecked. Like before your nvidia card was maxed out and your CPU could easily keep up with its needs. Now you have a faster GPU and your CPU can't feed it enough to push its potential. I have a 5700XT but don't play those games. I'm sure I could though. The recommended specs for those games don't seem that high.
I also remember seeing some headline somewhere saying the latest WoW DLC raised the requirements by a lot. I don't play it or keep up with it but I think I saw that somewhere.