[joosters]

I'm using a 4k display on a mac mini, but I've got it set halfway between the 'larger text' (1080p x2) and 'more space' (4k with no pixel doubling).

This doesn't mean I'm running it at a lower resolution - behind the scenes, the mac is actually rendering the display at 6016x3384 and then smoothly scaling it down to the native 4k of 3840x2160.

Because it's having to draw everything at a higher resolution than the actual screen, performance does take a hit, but I find everything still works perfectly smoothly and responsive (just don't try playing games at this resolution on the mac mini!)

[joshmn]

Mac Mini user here also: What display are you using?

[joosters]

It's a BenQ EW3270U, 4k @ 60hz, connected via USB-C. It's been working just fine, I'd recommend it.

I have a second monitor which is not high-DPI but 2560x1440, connected with a USB-C => displayport cable. Surprisingly, the mix of high-DPI and normal DPI monitors works really well, with no problems, even when moving windows from one display to the other.