How can I stop frame time spikes during group combat in Project Orion?

Frame times in Cyberpunk: Project Orion jumped from 8ms to 42ms during combat, causing stutter. I tried disabling the memory device, but it crashed the game, which was a pain. I used the GamePP Resource Scheduler to set priority to Real-time and tightened timings from 40-40-40-76 to 36-38-38-72. RivaTuner confirmed frame intervals converged to 7-11ms. CPU usage stayed at 62-70%, and fan speed was 2100-2400 RPM. The combat is fluid now, and I switched to the optimal profile.