Why does The Witcher: Remake stutter during combat on the ASRock H310CM-HDV?

Combat frame time in The Witcher: Remake jumped from 8ms to 45ms. I tried disabling the camera, but it broke my stream. Using GamePP Conflict Detector, I set Razer Synapse to manual start. RivaTuner verified frame time stabilized at 7-12ms. This verified the fix for my streaming setup.