Why does The Witcher Remake stutter during magic scenes on my JGINVUE?

Kaer Morhen magic effects were stuttering due to memory errors. I tried moving RAM sticks, but the system hung. I used the GamePP BIOS Load Line Voltage Adjustment Wizard to bump voltage from 1.20V to 1.25V and set timings to 16-18-18-36. MemTest86 ran 6 loops with zero errors, and GamePP sensors showed stable 42-48C temps. I exported the config and the game runs perfectly.