Solving VRAM addressing lag on Sapphire RX 9070 XT
Whenever I enter a complex ecosystem and flick the camera, the game just hangs for a split second. It's enough to make anyone nervous during a hunt. The 16GB of VRAM on the Sapphire RX 9070 XT was choking on high-res textures because the I/O queue scheduling was a mess, leading to addressing latency spikes between 15ms - 22ms. I started by killing every single background app, but while VRAM usage dropped, the latency stayed exactly the same. It was clear that software tweaks wouldn't fix a low-level hardware scheduling issue. I went into the driver settings, tweaked the memory management mode, and set the game's GPU priority to 'High'. My RTSS frame time graph went from a jagged 18ms - 32ms to a flat 11ms - 15ms. I did have a few background apps crash after the priority shift, so I had to move the scheduler back to 'Balanced' to stop the instability. Now the card stays cool at 62°C - 68°C. Resource Monitor confirms the latency is down, and VRAM temps are a steady 58°C - 63°C.
