Dell U3818DW
Has anyone used the Dell U3818DW on a MacBook Pro 15" Retina (mid-2014)? I can't set it to the highest resolution (3840 x 1600) even though I am able to use my Asus display at 3840 x 2560.
MacBook Pro with Retina display, iOS 11.2
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are you using hdmi? If so, try displayport - not via an adapter, but using a displayport to mini-displayport cable. That makes a huge difference for me using large monitors.