Diablo 2 resurrect does not take advantage from ultrawide, not great but OK.
But, playing the game in ultrawide has a significant impact on FPS:
- Playing on 3440x1440 instead of 2560x1440 will decrease FPS by around ~30% (~130 instead of 180)
- Playing on 5120x1440 instead of 2560x1440 will decrease FPS by nearly 50% (~90 FPS instead of 180)
This is absurd, because the game ends up displaying the same things - thanks to the black bars. The resolution cannot be changed, as it takes the one of the desktop (in full screen).
Config: 5900X & RTX 3080