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noratio

macrumors newbie
Original poster
May 25, 2014
12
1
Updated to Majove today and my external UHD TV won't output at 60hz 4K anymore which has been working fine. I got two adapters to test, a Club one and a Accell. Both locked at 30hz now where they were working fine before.

- I am using an iMac 5k late 2014
- Thunderbolt to HDMI 2.0 60hz adapters
- Works fine in bootcamp (Windows 10) at 4K 60hz

All of this is a software bug for sure.

Hope they can fix this as soon as possible so I can start editing again at 60hz... so so disappointing. I should have wait before updating.. can't trust updates from Apple anymore.. it's been either breaking bootcamp or breaking features that was working fine. All the billions they have and they can't test drive their OS before a release.
[doublepost=1539195437][/doublepost]I can confirm that forcing 60hz using SwitchResX is working, but can't use scaling.

And no WAY I'll pay for to get the resolution that I am supposed to have right out of the box.
 
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