I upgraded from an RTX 3080 Ti to an ASRock Taichi White OC RX 9070 XT, paired with a Ryzen 7 9800X3D. After using DDU to remove the old drivers, my average and peak FPS improved, but my 1% lows initially dropped from around 100 FPS to 60 FPS and stuttered more often. I wasn't using any GPU tuning profile. Could this be caused by a driver, BIOS, or Resizable BAR setting? After a few restarts, the issue seemed to resolve itself and my 1% lows reached about 150 FPS, which is roughly a 50% improvement over the 3080 Ti.
3 Answers
The CPU can have a major effect on 1% lows, especially in CPU-limited games, but since you kept the same Ryzen 7 9800X3D, it probably isn’t the reason for the sudden change. The improvement after several restarts suggests the driver installation, shader compilation, or background setup was still completing. If the lows remain stable now, there may be nothing else to fix.
It’s hard to diagnose without details such as the driver version, complete system specs, BIOS settings, and any tuning profiles. Since this was your first AMD card, the initial driver setup may simply not have settled correctly. A few restarts resolving the problem points more toward a temporary software or shader-cache issue than a hardware limitation.
The card is an ASRock Taichi White OC running with a Ryzen 7 9800X3D, and I’m not using any tuning profile. The performance improved after restarting a few times.
Check that Resizable BAR is enabled in the motherboard BIOS. It generally shouldn’t be turned off for a modern GPU, and it can affect performance and frame-time behavior in some games. Also make sure Above 4G Decoding is enabled if your BIOS exposes both options.
I wasn’t sure whether Resizable BAR should be enabled, but I’ll check the BIOS and make sure it’s active.
That seems to have been the case. After a few restarts, my 1% lows reached around 150 FPS, so I’m very happy with the upgrade.