Dealing with memory timing lag on Onda A520-VH-W in MGSV?

Switching weapons felt sluggish, almost like the UI was sticking, which becomes incredibly frustrating during long stealth missions. The default memory timings on the Onda A520-VH-W are way too conservative, resulting in a miserable 95-110ns latency. I tried bumping the page file to 32GB first, but that was a disaster—it didn't touch the lag and actually dropped my FPS from 85 to 62. I realized I had to dive into the BIOS. I manually tightened the primary timings from 18-22-22-42 down to 16-18-18-38 and bumped the DRAM voltage from 1.2V to 1.35V. AIDA64 showed latency dropping to a crisp 78-84ns, and the game finally felt responsive. I did hit a wall early on where the system BSOD'd twice during the first few boots, but loosening tRAS from 38 to 42 fixed the instability. RAM temps stayed between 42-48℃ and VRMs hit 55-60℃. After 6 passes of MemTest86 with zero errors, it's finally stable. My fingers actually feel the difference in response time now.
Category:Troubleshooting Last updated:February 15, 2026 12:35 PM