How to fix SLC cache slowdowns on Zhitai TiPro9000 4TB in Tomb Raider?
While exploring ancient ruins, the game would just freeze for about 0.5 seconds. In an action-adventure game, that kind of hitching completely kills the rhythm. Once the dynamic SLC cache on the Zhitai TiPro9000 4TB fills up, the write speed plummets from 7000MB/s to under 1000MB/s, causing abnormal delays of 2.8-4.5ms during resource streaming. I first tried killing all background disk scanning software, but the frame time spikes remained, which proved the bottleneck was the hardware cache. I then went into Device Manager, bumped the NVMe controller queue depth from 1024 to 2048, and enabled the forced write cache flush policy in Windows performance options. CrystalDiskMark showed 4K random reads jumping from 52-65MB/s up to 75-88MB/s, and the world loading became way smoother. After the first queue depth tweak, I noticed a slight delay in drive detection at boot, but switching to the High Performance power plan fixed it. Drive temps stayed between 45-58℃, and the heatsink did its job. I/O stress tests confirmed the response times are finally where they should be, with temps at 45-58℃.
