I have a RX480 GPU, MSI Mobo, 24GB of Ram, 1TB SSD and 1TB HDD. I have never had any issues out of it for the past 2 years, except that any driver update after version 19.1.1 severely lags Counter-Strike: Global Offensive. I have tested multiple releases between the latest and 19.1.1, and have found no success but to revert to 19.1.1.
When I load into CS:GO (with version 19.1.1), I hit right at 120 FPS in the menu (the menu frame rate is capped to 120). In game, I hover between 120-200 FPS depending on what is going on. When I load in with any other driver version, my Frame rate instantly drops, and doesn't go over 50 FPS. There are no frame rate fluctuations when I am not moving in game when using a driver version newer than 19.1.1. It will not hit above 40 FPS consistently, and will often go up as high as 70s momentarily.
I have tried all I know to do, except reinstall windows (which will take forever, because I make music and will have to reinstall many programs for plugins haha). Any insight is appreciated. Thanks for reading, and God Bless!!