Why does Metro Awakening stutter on Onda H610M+?

Tunnel textures stuttered constantly, degrading the atmospheric experience. Manual overclocking caused a blue screen and restart. I used the GamePP BIOS Load-Line Voltage Adjustment Wizard to lock memory at 2933MHz and voltage at 1.25V. MemTest86 ran 4 clean rounds, and the memory chip temperature dropped from 55°C to 48°C.