I have just replaced my monitor today. I had an excellent AOC 32" 1440p 144hz monitor that I replaced today with Dell 27" 4k monitor, which also seems excellent
I didn't have any problem with any DAW with my previous monitor, but as Windows 10 defaults to 150% and some DAWs support HiDPI, I feel it worth it to save some physical place and have more space on screen.
Unfortunately, it seems not all my tools will be usable. Anyway, I have these notes about some of the DAWs installed in Windows (later, I will see how things are with Mac and Linux):
1. Cubase 11: it's usable but blurry text little bit as it I couldn't find the HiDPI option.
2. Studio One v5 (Artist): looks very nice with the HiDPI but some old synths are too small and not usable at all (like FM8, Massive, Absynth5, etc).
3. Live 11: looks great
4. Bitwig Studio v4: looks great
So far, I have tested those DAWs in Windows. Glad that I didn't sell Live and Bitwig is a great DAW overall
What's your experience with 4k monitors (especially the 27" ones), and how is your DAW showing there?