Why does The Mageseeker crash during intense team fights?

During high-intensity ranked fights, the game would crash to the desktop without warning, which was absolutely maddening. I first tried limiting the maximum frame rate via software; while crashes decreased, the smoothness was ruined, a compromise I found unacceptable. I used the GamePP BIOS Load-Line Voltage Adjustment Wizard to set the load-line to L3 mode and increased offset voltage by +0.02V. Voltage fluctuation dropped to 0.01V per HWInfo64, core temp hit 78-84℃ per HWInfo64, and Vcore stayed at 1.22-1.28V via HWInfo64.