Getting annoying frame drops and timing jitters in stealth sections with my Vengeance DDR5 6400. Why is the latency so unstable?

When creeping through the shadows, I noticed these micro-tears in the image that made precision positioning a complete nightmare. The default XMP profile for the Corsair Vengeance DDR5 6400 was acting up on my board, with memory latency swinging wildly between 62-78ns. I tried switching to the High Performance power plan in Windows, but that was a joke—it didn't touch the underlying hardware timing issues, which left me pretty frustrated. I eventually dove into the BIOS Advanced Memory settings and bumped the voltage from 1.35V to 1.38V, while locking tRCD and tRP at 32-32-32. After running AIDA64, the read latency tightened up to 58-62ns, and my frame times dropped from a messy 14-38ms to a smooth 11-15ms. It wasn't a straight path, though; I hit two boot failures during memory training until I loosened tRFC to 480 cycles. Temps sat between 44-50℃ with fans humming at 1200-1400 RPM. Checking the memory controller load curve in HWiNFO confirmed everything was finally leveled out, keeping frame times locked at 11-15ms. Still, the XMP stability on this kit is a bit of a gamble.