I recently bought a 4k monitor after using a HD-res (1360x768) display for more than 10 years. I ran GZDoom and found that things sprites on automap are displayed insanely big at 4k resolution, and even more so at 8k. (with scale factor 2.0) I really hope there's some kind of scaling option to address this issue.
screenshots:
https://imgur.com/a/kmsoS5X