plasma 6 graphic hardware acceleraton

Hi, yesterday i updated one tumbleweed system to plasma 6 graphic: Radeon RX 7900XT 20GB open surce drivers could anybody tell me where i find the settings for the hardware accelleration? (switch on off, change driver) i was looking in systemsettings workspace behavior (and other places but did not find) .. at the moment i also did not find in plasma 5 but i remember somewhere there was this settings... and, i recognized that if i use x11 "glmark2" or "vkmark" will not work. one works the other not (i am on another system now, and i have forgotten which on.) with wayland both work. simoN -- www.becherer.de