I upgraded from an r9 280x to an rx 480 8gb (with an fx 8350 and 16 gb of ram) and I'm actually seeing worse performance in games. I completely reinstalled my drivers, four times actually. I checked msi afterburner and my clocks are all good. I went from 50-60 fps in gta 5 to sub 35. If anyone has any idea what it might be, don't hesiitate to let me know.