Why does Cyberpunk Project Orion have frame time spikes?

Combat in Project Orion spiked to 45ms, which was fatal. I tried disabling fans, but it broke my stream. RivaTuner showed 8-45ms variance. I used GamePP Peripheral Driver Conflict Detector to set Synapse to manual. Frame times stabilized to 7-12ms. HWiNFO shows 65-72% CPU. This verifies smooth gameplay.