I use an a 38" Acer 3840x1600 ultrawide. For 2D windowed applications, it works exactly as you'd expect. Be sure to have tiling support in your window manager

I use an a 38" Acer 3840x1600 ultrawide. For 2D windowed applications, it works exactly as you'd expect. Be sure to have tiling support in your window manager for the best experience -- I typically have two windows opened side-by-side, and the Windows 10 window manager makes this tiling easy to do. Support for ultrawide resolutions in full-screen applications like games can be hit or miss, but it generally works, and you can always fall back into standard widescreen or fullscreen resolutions with letterboxing if it doesn't. One downside I've noticed is that due to the curved screen, glare from bright light sources (e.g., the sun) that reflects off the screen is somewhat out of focus with whatever is being displayed, which is fatiguing to look at. I don't know if this is a problem with this display in particular, or curved displays in general, but something to look out for. Overall, I'm satisfied with my ultrawide, and will continue to use a single large display over multiple smaller displays in the future.