I have a Sony 55” x850c 4K HDR TV. I’ve tried every combination of settings: my TV inputs are set to enhanced 4K, HDR is set to Auto, my Roku Streaming Stick+ and Ultra are set to Auto Detect Display (4K, 60htz, HDCP 2.2, 4:2:2, HDR). 4K HDR content looks fine. However, on SD/1080p content there is purplish color banding and artifacts in the dark areas (it’s worse towards the screen edges). I know this is a color bit depth issue with HDR on non-HDR content, but unlike other streaming devices, there’s no option to control it. The auto settings aren’t working. Does anyone else have this issue?
I’m bummed because I like Roku’s interface better; is there a possible update or fix coming? Until then, I have to return my Roku devices and go with alternatives.