How to fix lag in The Legend of Heroes: Kuro no Kiseki II on Maxsun B650M?

I was losing immersion in the ruined streets due to visible character lag. I tried cleaning temp files, but the stutter persisted. I then used GamePP Resource Scheduler to set the game process to Real-time priority and switched the power plan to High Performance. AIDA64 confirmed the frame interval dropped from 12.3-15.1ms to 8.1-9.4ms. The chipset temperature stabilized at 58-63℃, and I finally saved the configuration.