Does not give me the ability to force 60Hz at 4K
Same problem here! Updated to Mojave and it breaks 4K 60hz. I am using a Mini Display (Thunderbolt) adapter to HDMI 2.0 60hz from Club that I have been using for 2 years now on my iMac 5k.
I have tried to create my own EDID, no luck. My UHD TV is detected as a TV and won't give you the ability to change the refresh rate. So so bad. If I use bootcamp and boot into Windows, same iMac, same cable, same adapter, everything works just fine in 4K at 60hz. So really a software bug.
P.S. I also have a Accell adapter.. same problem with two adapters that can do 60hz at 4K..
[doublepost=1539195758][/doublepost]Made more progress.
I can confirm that forcing 60hz using SwitchResX is working, but can't use scaling. Still can't get 4:4:4 to work. YUV(compress data color) is in use still with SwitchResX.
NO WAY I'll pay for to get the resolution that I am supposed to have right out of the box.
Grrrrr Apple.. Steve Jobs must be turning is in tomb. When I renew it won't be Apple. I am totally fade out. Windows does it all now with color gamut, HDR and Dolby Vision / Atmos. Can't deal with a company that keep billions and to develop on the latest technology and sell overprice computer with a CPU that is always a generation behind.... come on..