How do I stop frame generation jitter and voltage drops in Enshrouded?

Late-stage rendering in Enshrouded was painful. My GALAX B760M Light D4 voltage dipped to 11.7V per AIDA64, causing 15ms frame times. I tried High Performance mode, but it made the voltage drop worse, stuttering even more. I then used GamePP Resource Scheduler to set real-time priority and added a +0.03V offset. AIDA64 showed voltage stable at 12.0-12.1V. Frame times dropped to 9ms via RTSS, with fan speed at 1200-1400 RPM, setting a stable state.