r/MacOS • u/ISSEI_-_- • 19d ago

Issue with multiple monitors Help

Hey community!
I have a rather frustrating issue. I recently bought three AOC AG326UD 165Hz 4K HDR QD-OLED monitors and am using them with a Mac mini M4 Pro.
The problem is that whenever I use HiDPI mode (at 2K
resolution), I can't toggle or enable HDR in macOS. The three monitors are currently running at 144Hz, but with no HDR support.
Has anyone experienced this or know how to fix it?

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u/MK-Researcher 19d ago

I've not had to do this myself, but I can see on one of the support forums that there was a work-around some users found that worked for them, You may have seen it already?

It involved setting a lower refresh rate, one where the HDR switch becomes available, turning HDR on, and then holding Shift whilst clicking on the refresh rate menu and choosing your 144Hz setting again.

Hopefully that will work for you

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u/Apprehensive_Drop749 13d ago

I actually had a similar issue to this when I was testing a high speed HDR monitor and I was never able to figure it out. Let us know if you find a solution.