I'm getting weird thread scheduling stutters during large combat scenes in Sword and Fairy 7 (Upgraded) on my Onda B760ITX-B4. How do I fix this?

Every time a character uses a wide-area attack, the screen hitches. It's a basic scheduling issue that's honestly pathetic. The VRM on this Onda ITX board struggles with transient current spikes, leading to voltage drops of up to 0.08V, which makes the CPU cores bounce erratically between 3.2GHz and 4.1GHz. I first tried locking the minimum processor state to 100% in Windows, but the CPU just hit 95℃ and throttled even harder—a total fail. I went into the BIOS, set the Load-Line Calibration to Mode 4, and manually tuned the Vcore to 1.25V. In Cinebench R23, my multi-core score went from 18200 to 19500, and the frequency curve finally flattened out. I actually had a boot failure when I first tried Mode 4, but backing off the voltage offset by 0.01V fixed it. CPU temps are now 78-84℃, and the VRM area is sitting at 85-90℃. I used the BIOS backup tool to save these settings so I don't have to do this again.