Halo 5 True 4k Not Working

We’ve downloaded the new 4k patch for Halo 5. Now the Samsung U654T10 television we have, when it recognises a 4k HDR signal, it switches to HDR mode. For some reason Halo wont switch, it’s still upscaling. Is the new patch ‘true 4k’ because if so we can’t seem to get it to work. We know 4k works on the new XBox because we’ve tried 4k Planet Earth.

Its true 4k

I have the same issue with my Sony X90c, its in ‘true 4K’ mode, but it won’t recognize the signal as being HDR and switch to its HDR Video 4K mode - Forza Horizon 3 switches automatically.
I’ve not seen a setting that needs flicking for HDR in the Halo5 menus. Any ideas?

Worth noting that while Halo 5 was updated to support 4K, it does not have HDR support / not HDR enabled.

> 2533274813317074;4:
> Worth noting that while Halo 5 was updated to support 4K, it does not have HDR support / not HDR enabled.

How would we know if we are using 4k?

Please don’t revive old topics thanks