Can BIOS tweaks fix 4K Mod lag on ASRock A320M-HDV?
Trying to run a 4K Ultra Mod on this entry-level legacy board is honestly a joke; the hardware stress is just absurd. The PCIe 3.0 bandwidth on the ASRock A320M-HDV R4.0 was completely saturated by the 4K texture stream, causing the FPS to bounce wildly between 20 - 40 FPS. I initially tried dropping the resolution to 2K, but the image looked like a blurry mess, which was a disappointing and useless compromise. I eventually went into the BIOS, disabled every unnecessary onboard device, and forced the PCIe link to 'Maximum Performance' mode, while nuking all redundant background processes in Windows. Read/write tests showed data latency drop from 60ms to 42 - 48ms, and my minimum FPS climbed by about 10 frames. I hit a snag where the RAM frequency dipped after the BIOS changes, but manually reloading the XMP profile fixed it. Board temps are between 50 - 60℃ and CPU load is sitting at 85 - 92%. I saved a system snapshot of the settings, and GPU temps are holding at 68 - 74℃.
