How to stop clock speed fluctuations on Vastarmor RX 9070 XT?
Seeing my 1% lows jump from 40 FPS to 62 FPS was the most satisfying feeling ever. The default clock behavior on the Vastarmor RX 9070 XT is way too aggressive with shadow details, causing the core clock to bounce between 2100-2600MHz, which created this annoying micro-stutter. I tried enabling Boost in the AMD drivers, but while the peak FPS went up by 5, the minimums became even more unstable—it was a total waste of time. I used the Overdrive tool to manually lock the core at 2450MHz and tweaked the voltage curve from 1.1V to 1.15V. RTSS showed the frame time curve finally settling into a 13ms - 16ms window, making combat feel fluid. I did have one driver crash right after locking the clock, but backing off the memory frequency by 50MHz fixed it. GPU temps are a cool 64℃ - 70℃. The stability is night and day now, with frame times locked at 13ms - 16ms.
