Stable:
Kguix with cpu cache on, 10h
Y-cruncher FFTv4 4h,
LinpackXtreme 1h,

first screenshot – fclk 2167, second – fclk 2200.
Tested fclk 2200 with LinpackXtreme (10g variant) + OCCT VRAM(11 gb) + Furmark and music in background,
no cracks, stutters or strange noises during test, variations seemed also ok.
after it enable also Kguix with no cpu cache to load my ram, no changes in behaviour.

Noticed after test that mu RRDS is 4, not 5 and change it to 5.

6200/6400 is unstable in Kguix with cache on no matter what i do,
FFTv4 and VT3 passes on 6200 for hours, but Kguix get me an error in 0,5-1,5h every time no matter what.

Any suggestions for gaming perfomance?