Nioh is stuttering during boss fights because my Valkyrie V360 MIST pump speed is unstable. Should I lock the RPM?

During huge boss fights, I was getting these millisecond hitches that were just infuriating. The Valkyrie V360 MIST pump was in Auto mode, and the RPM was bouncing between 2000 - 3000, which caused the CPU temps to swing from 70℃ to 85℃. This kept triggering the boost clock to toggle on and off, causing the lag. I tried the High Performance power plan, but that was useless—it didn't stop the temp swings and actually pushed the peak temp up by 2℃. I finally opened the AIO control software and locked the pump speed at a constant 2800 RPM, then synced the radiator fans to a linear CPU temp curve. Core temps stabilized between 65℃ - 72℃, and the frame times tightened up from a messy 12-25ms to a clean 8-11ms. I did deal with some annoying high-frequency resonance after locking the pump, but changing the radiator orientation fixed it. Everything is rock solid now. Backed up the pump and fan config via a system snapshot.