That is unfortunate. I run two HP Z32 4k monitors side by side in portrait mode. Running Debian Linux Buster. Connected to NUC8i7hvk. LXDE, sometimes KDE.

That is unfortunate. I run two HP Z32 4k monitors side by side in portrait mode. Running Debian Linux Buster. Connected to NUC8i7hvk. LXDE, sometimes KDE. Text is clear. Moving windows around is smooth as silk. 27" would be too small. 30" is about the right size for the resolution. Plus I have five or six virtual desktops to task switch between various development projects.