[dkmar]

Agreed. I've been trying to get my 2018 MBP to do 4k 60hz through my AVR and TV via a USB-C to HDMI cable with no luck so far. The AVR, TV, and cable are each individually HDMI 2.0a or greater, but my MBP refuses to believe that more than 1080p 60hz is possible.

And it actually worked at 4k 60hz the first time I plugged everything together, just not since then. Irritating to say the least.