How to fix memory bottlenecks in RDR2 4K MOD on MSI B760M?
Riding into Saint Denis was a struggle; frames would plummet from 60 to 30, making the horse feel like it was stuck in glue. I saw memory bandwidth utilization hitting 85-92%, creating a massive I/O bottleneck. I tried 'High Performance' mode in the OS, but the stutters remained, which pushed me to try manual timing tweaks. I went into the BIOS and tightened the primary timings from 16-18-18-36 down to 14-16-16-32 and bumped the voltage to 1.35V. This gave me a 15% boost in memory bandwidth and made the city loading feel way smoother. I actually bricked the boot process once during the tweak, but loosening tRCD by 2 units brought it back to life. Memory temps sat at 42-48℃. Comparing the frame time graphs, the stuttering is gone and temps remain at 42-48℃.
