Why does TEKKEN 8 stutter during dense combo scenarios?

Combo execution was ruined by voltage spikes. I tried High Performance mode, but voltage dropped to 11.7V. I used GamePP Resource Scheduler to set Real-time priority. AIDA64 showed 12V stabilizing at 12.0V. RTSS confirmed frame time dropped from 15ms to 9ms. This export of stability is a must.