As already metioned in the title, I have high FPS(at least above 60) in many games, but after some time (usually about a minute) of playing, the game begins to "Stutter". The FPS remain high though. Happens in GTA V and Rainbow Six Siege, but also other games.
What I´ve tried so far:
All drivers updated
run pc in dual ram
setting everything to low (ingame aswell as in the Radeon settings)