My ADATA XPG 8GB DDR5 4800 is causing timing shifts and massive frame drops during heavy combat in Nioh, any fix?

Every time I trigger a Ninjutsu, the screen does this weird twitchy thing that's incredibly distracting in a fast-paced fight. After digging into the logs, I found the ADATA XPG DDR5 4800 auto-config was constantly switching frequencies during load spikes, causing memory latency to jump wildly between 95 - 120ns. I first tried bumping the virtual memory to 32GB, but my 1% lows were still hovering around 40 FPS, proving that software patches are useless against low-level hardware conflicts. I went into the BIOS, killed the auto-overclocking, and hard-locked the frequency at 4800MHz while manually tightening the primary timings to 40-40-40-77. In the RTSS frame time graph, the jagged spikes flattened out instantly, and my minimums jumped from 40 FPS to 58 FPS. It wasn't a smooth ride though; I had three random reboots until I nudged the memory voltage from 1.1V to 1.25V. RAM temps stayed between 40 - 46℃ and the southbridge was at 52 - 58℃. Ran five passes of MemTest86 with zero errors, though the sticks hit 58 - 63℃ under load.