I have the same problem on Mojave 10.14.3 with DL-6950 and 4k screen. Native 4k resolution works fine, but it is too small. Scaled HiDPI resolutions are very choppy. I could live with native resolutions only, but these random freezes are really a problem.
Last edited by tuxtard; 03-19-2019 at 08:31 AM.
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