How to fix PCIe link fluctuations on Jginyue B760M Gaming D4?
There is nothing like the feeling of your minimums jumping from 55 FPS to 78 FPS once you actually fix a hardware bottleneck. The Jginyue B760M Gaming D4 was acting up during asset streaming, with the PCIe link flipping between Gen4 and Gen3, causing GPU throughput to swing wildly between 14-18GB/s. I tried the 'Maximum Performance' power setting in the NVIDIA panel, but that just added 7℃ to my CPU with almost zero FPS gain. The real fix was updating to the latest BIOS and forcing the PCIe slot from 'Auto' to 'Gen4' while disabling all C-state power savings. In 3DMark's storage benchmark, the bandwidth variance dropped to under 4%. I almost bricked the board when a power flicker hit during the BIOS flash, forcing me into CMOS recovery mode, but a manual clear fixed it. Board temps are now 48-55℃ and memory is around 58-63℃. Data latency dropped by 10%, and the game finally feels fluid.
