Seems like xbox one s is down scaling UHD

Hello Spinhead82,

Things are still in a state of change in the land of 4K UHD and haven't quite settled out yet. Part of this may have to do with DRM (Digital Rights Management) and trying to lock things down when it comes to all this 4K digital plumbing. Not only is it the
hardware, like needing to use HDMI 2.X cable. But, it's also the software. Does the firmware in the monitor/TV support the 4K UHD (HDCP 2.2)
content coming from the attached device ("Checking your TV's 4K and HDR capabilities on Xbox One S")? Yes, the Samsung U28E590D
can do 4K UHD, but does it support HDR10? HDR10 support seems to be a very important threshold when comes to connecting the Xbox One S to 4K UHD TVs. The current crop of 4K UHD monitors seems to be more directed to PC gamers. While, the Xbox One S is geared
more toward lager format TVs. I'm sure that this is not the only list, but Windows Central has what it calls "Best 4K HDR TVs For Xbox One S".

Good luck and good gaming,

SA

The Xbox will output 1080p then your display will scale it to a uhd res.

My internet connection is 300Mbit down/20Mbit up, so speed isn't the issue for me. I can run 4k Netflix just fine along with Prime Video on my Roku 4. My TV is not 4k @ 60Hz but it can do 4k at 50Hz, 30Hz, and 24Hz. I have tested this through my Roku
4 and Android TV box. However, the XBOX One S says my TV fails everything. I am not sure how it determines what it does but it is clearly flawed! My Dashboard may not be displayed at 4k due to the 60Hz limitation but YouTube, Vudu, Prime Video, and Netflix
should all run fine in 4k with no issues at all. UHD Blu-Ray discs should also play fine natively at 4k. Out of everything I have tried, I can't get a single one of them to even scale up to 4k. I do not have a UHD Blu-Ray disc to try and going out to buy
one seems like a waste with how disappointing this One S experiences has turned out to be so far.

Apologies for the delayed reply! Unfortunately since this has been narrowed down to one 3rd party game, you may need to continue to play that specific title at 1080p rather than up-scaling to 4K to avoid the flickering by using the steps I provided in my
original reply above.

Keep in mind that setting your TV resolution through the console will only affect how content under native 4K is scaled, and native 4K UHD & HDR content will continue to come through assuming 'Allow 4K UHD' and 'Allow HDR' are checked.

See I’ve tested it on my old Emseron 720p TV, and no flickering happened. It seems to only happen when its on my newer Samsung TV with UHD Color (HDR10) enabled on the tv itself. Otherwise 4K UHD works fine??? My tv acts very weird with the Xbox One S