I cant find an additional overclocking guide for my:
ASUS ROG Strix Radeon RX 580 T8G Gaming Top OC Edition
if you know what overclock setting I should set it
send me a guide about it or if you just write here!
Get MSI Afterburner, max your power limit, increase your core clock 50+ at a time while testing with UNIGINE Valley or Heaven benchmark till artifacts (weird lines and colors) happen or your driver crashes. Then fine tune it by increasing 10 at a time from your previous clock. Do the same for Memory, then save your profile. Don't check apply overclocking at startup.
Example Core clock: +50 > +100 > +150 > crash > +110 > .... > +130
Keep your temps below 80c, if you go over it or stay near it., consider installing a fan on your case near the GPU.