Primal Carnage has huge FPS swings during heavy fights on my Colorful H610M-K. Should I check the core residency settings?

Fighting off a swarm of dinosaurs is a mess when your frame rate is bouncing between 42 and 58 FPS every time you turn the camera. The VRM on the Colorful H610M-K M.2 V20 is pretty basic, which caused my CPU clocks to wobble between 3.2GHz and 3.7GHz with really uneven core loading. I tried turning on Windows Game Mode, but that was just a placebo—it did nothing for the stutters. I eventually went into Advanced Power Options and set the minimum processor state to 99%, then used a third-party tool to lock core residency into the high-performance range. In RTSS, the frame time variance shrank from 15-30ms to a much tighter 18-22ms. My idle CPU temp jumped from 38℃ to 45℃, so I had to bump up my case fan curves to keep things balanced. Now the CPU runs at 65-71℃, the board is 52-57℃, and frame times are stable at 11-15ms.