I'm getting hitches during physics-heavy combat in Ghost of Tsushima. Is this a voltage issue?

Every time I land a wide slash, the screen hitches. It's a basic scheduling issue that's honestly pathetic for this hardware. The 7800X3D's 3D V-Cache struggles with complex physics models, and the VRM was seeing voltage drops of 0.06V during current spikes, causing the clock speed to bounce between 4.2GHz and 3.8GHz. I tried the Windows Ultimate Performance mode, but that just pushed the CPU to 90℃ and triggered thermal throttling—total opposite of what I wanted. I went into the BIOS, set Load-Line Calibration to Mode 3, and manually set the core voltage to 1.15V. Cinebench R23 scores went up by 400 points, and the frequency curve is finally flat. Mode 3 caused a boot failure at first, but a tiny 0.01V offset correction fixed it. CPU temps are now a comfy 72-78℃. I backed up the BIOS profile, and the input response now feels instant.