I FIND SOMETHINK !!!!! delete clearly your amd drivers with DDU in NO FEAL MODE > download AMD Radeon Software Crimson ReLive 17.1.1 driver download
DO NOT ENABLE WattMan in amd radeon setting
download msi afterburner
AND the last think, you must disable MSAA at all games you are playing FXAA is good
If you follow all this staps, it will be good ^^
i had the same problem and i tried every method possible.
now the solution i got is that i download MSI Afterburner and i set power limit to the max (+50%)
Fixed my problem.