In S.T.A.L.K.E.R. 2 using G.Skill TRIDENT Z5 RGB DDR5 6800, frequency seems unstable. Do I need to manually adjust voltage?

Based on OC log 2025-gsK-OC on a Z790 board. Using standard XMP profiles caused random reboots during map loads; MemTest86 confirmed several memory errors. My first mistake was cranking voltage to 1.45V, which pushed module temps above 60℃ and triggered thermal throttling. I switched to a fine-grain approach, bumping core voltage by 0.02V and locking VDDQ to 1.38V in the BIOS Advanced Voltage menu. Temps stabilized at 48℃ - 52℃ and passed 10 crash-test cycles. Frametime smooths out drastically, and crash frequency dropped to zero. However, under 'Ultra' settings, memory pressure is still immense, and rare micro-stutters remain unavoidable.