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stevenmunro

macrumors newbie
Original poster
Aug 2, 2018
1
1
After updating to 10.13.6, I noticed that the text on my two 27" screens is now blurry on my Mac Pro 5,1

I have four screens all up (2x DELL U2715H and 2x DELL P2214H)

The 27-inches are running their native resolution of 2560x1440 (DP->mDP) and the 22-inches (DVI->DVI) are running 1920x1080.

The video cards are AMD Radeon HD 7970 3072 MB and Radeon RX 580 8192 MB.

If I move the application into either of the 22-inch screens, the text quality is fine. This is only occurring on the 27-inch screens. On 10.13.5 it was all good.

Does anyone have a clue as to what is causing this?
[doublepost=1533278419][/doublepost]One observation I've made,

DP (from video card) -> mDP (back of monitor) shows a refresh rate of 59.88 Hertz (NTSC)

I plugged in an HDMI cable into one of the 27-inch and it shows 60 Hertz - AND the blurry issue went away for that particular monitor.

Apple has broken something to do with displayport in their latest update..
 
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