Issue with HiDPI on Mac mini M4 and Samsung C34J79 (3440x1440)

[danidz96]

Hi @waydabber !

I recently bought a Mac mini M4 (basic model), and I’m having issues with display quality on my Samsung C34J79 monitor (3440x1440 resolution) when connected via both Thunderbolt 3 and HDMI.

Problem

Text and visuals appear blurry overall. I tried enabling HiDPI to improve clarity, but it makes the entire interface too large, which I don’t like. I also tried the “Enable Flexible Scaling” option, but it didn’t help.

What I’ve Tried

•	Enabling HiDPI: It improves sharpness, but the interface becomes too large.
•	Activating “Enable Flexible Scaling”: no improvements in sharpness or desired scaling.

Has anyone experienced this issue or have suggestions to improve clarity without making the interface too large? I’d appreciate any advice or guidance on advanced settings or software that could help me solve this. I’m getting a bit frustrated as I can’t seem to find a solution, and I’d love to use my monitor at its best.

[waydabber]

Currently there are somewhat conflicting reports about the M4 Mini and HiDPI support beyond 3072px. I was not able to make 3072px+ HiDPI resolutions work with my M4 mini except when connecting it to a 8K display, while some others reported success with some 5K ultrawides. However with flexible scaling you should be able to get beyond the 80% size - however I am not sure how acceptable a compromise would that be.

[danidz96]

Thanks for your response!

I don’t really like how it looks when it’s scaled up that much, plus I can’t get the display to look as sharp as it does at 2752x1152. I’ll wait and see if a solution comes up to make it work better with HiDPI on higher resolutions.

Thanks again for your help!

[aphilips]

Try turning off Magic Upscale (and any other samsung extra display features)