So I was looking at the settings for the RX 580, saw I could change the workload to compute, wasn't very benificial on cpu intensive games so I switched it back to graphics but every time I shut down and start up my computer, it runs games horribly, restarting it seems to fix this issue, and I know this happened after I did this, not only that performance has gotten worse, help?
Try resetting your Radeon Settings to factory default.
AMD explains how to do this: https://www.amd.com/en/support/kb/faq/dh-003
I already reset it's settings to factory default and it didn't work..
Sorry must of missed it when I read your original post about how you reset Radeon Settings to default.
Have you tried to uninstall and install the AMD Driver again using DDU?