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Having issues with blurry text on an external monitor connected to your Mac? This solution also worked for me and my LG Ultrawide monitor.

“I recently received a new MacBook Pro, and a new external monitor, from the company I work for. Unfortunately when I hooked the laptop up to the monitor (Dell U3014), via display port, I was surprised by the poor picture quality. Text was misshapen, and contrast completely off.

The reason is that the DisplayPort uses YCbCr colors instead of RGB to drive the display, which limits the range of colors and apparently causes the display to apply some undesired post processing.

Steps to fix the issue (I’ve found the solution in the link below):”

Read the entire article here: Blurry text on Dell Monitor + Mac OS X | Danilo Ercoli

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