How to fix write cache bottlenecks on Sapphire RX 7800 XT?
Whenever more than fifty units start spamming abilities on screen, the game just hangs for about 0.8 seconds—it's an absolute nightmare in the middle of a fight. The Sapphire RX 7800 XT's VRAM cache hits a wall during high-frequency writes, and the speed tanks from 500GB/s down to 200GB/s, causing a massive instruction pile-up. I tried killing every single background app, but the freezes persisted, which was incredibly frustrating. I ended up grabbing the latest vendor drivers and forced the write cache strategy to 'Enabled' in the control panel, while also reorganizing my page file distribution. CrystalDiskMark showed latency dropping from 18-30ms down to 10-14ms, and the battles finally felt fluid. I did notice a weird delay during shutdown after enabling forced cache, but disabling 'Fast Startup' in Windows sorted it out. Core temps are sitting between 60-72℃, and the input lag is finally gone.
