I recently got the rx 580 and it is nothing what I watched on youtube It is so so bad
ac odyssey 30 fps on lowest as possible (edited some config too)
far cry 40-47 hardly gets 50 also on lowest and also 900p not 1080
and there is a lot of crashes and drops and stuttering
I tried every single setting and still
adding more RAM will perk up the performance of windows generally and 16GB seems to be a good place at present
while I dislike 4GB cards, playing at 1920x1080 is not such a problem. The lack of VRAM becomes more apparent at 3840x2160 and above.