My Xbox X turns OFF game mode when it switches from a non-4K game back to the 4K menus. How...

Same TV, Q9FN from 2018, on latest firmware,

Gamemode is on, but even when i turn it off it is the same switching back and forth,

UHD is enabled on HDMI port 1

XBOX One X on latest update

Xbox One Setting is on 4k , 8bit, Standard, everything enabled but ycc 4:2:2

i play gears 4 without a problem in 4k hdr

will check on a different 4k tv, will report back

thing is xbox menu is not affected by this upscaling issue

it is only in game !

Hello,

Xbox One does not support 4K movies or games.

Xbox One S, supports 4K movies.

Xbox One X
supports 4K games and movies.

If you have 4K TV I recommend Xbox One X. If you have only Full HD TV, so Xbox One X can switch to Full HD mode. All the more power it can put into games.

There are over 130 games that are for the Xbox One X.

I'd doubt that Microsoft updated the TV app to support 4K, since they tailored everything more towards games.

But users with Xbox One X could try the following: Set up your console to 1080p resolution, but in the Advanced settings under video modes "allow 4k".

That will cause the Xbox One X to switch to 4K if anything specifically requests 4K resolution. If the TV App switches your TV to 4K then, then the X would support 4K set top boxes. But I'd doubt that.

Have you tried switching the TV to 3D mode (I know this sounds obvious but most of the time it doesn't auto switch).

Yes I also tried that, but it has the same result. Based on the work around I found, it seems that the issue is that the Xbox One X (or possibly it's an LG issue), can't switch from 4K 2160p mode to 1080p 3D mode properly. So by forcing the Xbox One X to
output 1080p, and not 4K, the TV then already in 1080p mode before the 3D mode is turned on by the Xbox. I don't really know what the Xbox One X is trying to do, but maybe it's just telling the TV to turn on 3D mode, and not telling it to switch to 1080p as
well, who knows.

It's an issue that myself and a number of others are having, and all the reports so far seem to be from people with LG TV's, so that kind of leads me to believe it might be an issue with the way the Xbox is telling the TV to switch to 3D when the Xbox and the
TV are in 4K output mode.

This is most likely caused by the receiver. What video mode is your receiver in? On a Yamaha I believe it must be in Mode 1. Pure Direct is not what you are looking for.

Power off the receiver. Press and hold the straight button and turn the receiver back on. When the menu comes up toggle right until you get to 4K mode. If not in Mode 1 toggle it on. Power off the receiver, then power everything back up and check your 4K
status on the xbox again.

Hope this helps.