I upgraded from an RTX 3080 Ti to an ASRock Taichi White OC Radeon 9070 XT, paired with a Ryzen 7 9800X3D. I used DDU before installing the new card and noticed that my peak FPS improved, but my 1% lows initially dropped from around 100 FPS to roughly 60 FPS. I haven't applied any tuning settings yet. Could this be caused by a driver or BIOS setting such as Resizable BAR, or is this expected after switching GPU platforms? After a few restarts, the issue seemed to resolve itself, and I'm now seeing around 150 FPS for my 1% lows, which is a major improvement over the 3080 Ti.
3 Answers
The CPU matters a lot for 1% lows, but a Ryzen 7 9800X3D is more than capable here, especially since you used the same processor with the 3080 Ti. That makes a CPU limitation unlikely; I’d focus on driver cleanup, shader compilation, BIOS settings, and making sure the card is running at its intended power and PCIe settings.
That kind of result usually means something wasn’t fully settled after the GPU swap rather than the 9070 XT being slower. Double-check that the latest AMD driver is installed, let shader caches rebuild, and restart the system a couple of times. Since your peak FPS was already higher, the early stuttering may have been temporary driver or cache behavior.
Check your motherboard BIOS to make sure Resizable BAR is enabled. It’s generally recommended for modern GPUs and can help performance and frame consistency. Also verify that Above 4G Decoding is enabled, since some systems require both settings.
I wasn’t sure whether Resizable BAR should be enabled or disabled, but I’ll check that along with Above 4G Decoding.
A few restarts seem to have fixed it. I’m now getting about 150 FPS for my 1% lows, so I’m very happy with the upgrade.