[itnAAnti]

I had a 34" 4K monitor in 2019, and it was a mess in Windows 10. I sold it and picked up an ultra-wide, 38" 3840x1600 (~109 PPI) and I couldn't be happier. I agree that a "good" monitor is a necessity, but I disagree with OP that "good" = 4K 120 Hz.

With any legacy application, and even many modern ones, UIs were either fuzzy, or tiny, or a mix of the two, even with all of the Windows per-program custom high-DPI settings tweaked. The UX was not consistent enough to be enjoyable, so I ditched it.

[amarshall]

For what it’s worth, the “fuzzy” version is usually about what you’d be getting on a display if it wasn’t HiDPI. Also don’t forget to exclude the rarer, but still happens scenario where the UI is scaled twice for some reason, so everything is huge.