How do I stop Gears 5 frame drops during group combat?

Gears 5 frame time jumped from 8ms to 45ms in combat. I tried disabling the camera, but it killed my stream. I was stuck. I used GamePP Peripheral Driver Conflict Detector to set the camera service to manual start and enabled hardware encoding in OBS. Per RivaTuner, frame intervals stabilized at 7-12ms. CPU usage held at 65-72%. I verified the stream was stable and the frame drops were gone.