I hope you went for Intel. My 5900x has nothing on 9900K. AMD is 40% slower in Sonar. Less VSTs, Much slower export...
I do not know what is going on. MMCSS is glitching. Load balancing also glitches. If both disabled ok
Thread scsheduling 0-3... tried every combination
Same RAM (NEO Gskill), GA motherboards 12+1 phase (one X570 one Z390), same