https://bugs.freedesktop.org/show_bug.cgi?id=101976
--- Comment #10 from Pablo Estigarribia pablodav@gmail.com --- also tested game Insurgency that had same problem as glmark2 and it works now!
seems that dpm is buggy on this radeon card, probably is better to disable it by default or put it on high performance for a more stable usage for users.