USB-C to HDMI Adapter Macbook Pro

I’m using an Anker USB-C to HDMI adapter ( to connect my 13" Macbook pro to a TV. The TV is capable of displaying a 4k image at 60Hz, with Chroma 4:4:4 - and I sometimes see this working correctly (verified using this image:

However, a lot of the time, the test image doesn’t display correctly, indicating I’m not seeing a 4:4:4 image.

I’m not sure if this is an issue with OSX, Macbook Pro, Anker adapter, or the Display. I have changed the cable so I don’t think that is the issue.

Any ideas?



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