what sort of performance issues are you seeing?
If I'm playing any game on the primary monitor I will see stuttering, pausing or video completely stopping on the second monitor. My primary GPU is a Nvidia 3090 FE; for media playback I've used Firefox, Edge and VLC.
System: 7950x, x670e Hero, 2x16 Corsair Dominator Pro @ 6200, 3090 FE, Ax1600i, EK AIO.
I don't know if this is something you have done, but i am having similar issues when my system isnt crashing and i have read elsewhere that installing the drivers for the radeon igpu might be a possibly culprit.
Silent Scone@ROG wrote:
Don't have a platform here to test, but you can remove the driver and simply disable in from Device Manager, see if this circumvents the crashing or micro stuttering.
Be sure to adequately test memory stability with tools such as Ramtest, too.