Halo reach on Xbox One : Low resolution

Hello !
I searched on the web but i can’t find any information nor any case similar to be : Every one complain about the poor FPS when you play the game on a Xbox one but i have another issue :
Well, i played it on my 1080p TV with my X360, and the game has a 1080p resolution, no problem.
Now, i want to play on the same TV BUT with my X1 (correctly set on 1080p) > The game looks bad, everything is pixellated (like à 480p resolution maybe), far from its quality when it runs on X360 …
Xbox one games (like Halo 5) looks great on 1080p, but not this game … What have i done wrong ?
Thank you !

> 2535466987381355;1:
> Hello !
> I searched on the web but i can’t find any information nor any case similar to be : Every one complain about the poor FPS when you play the game on a Xbox one but i have another issue :
> Well, i played it on my 1080p TV with my X360, and the game has a 1080p resolution, no problem.
> Now, i want to play on the same TV BUT with my X1 (correctly set on 1080p) > The game looks bad, everything is pixellated (like à 480p resolution maybe), far from its quality when it runs on X360 …
> Xbox one games (like Halo 5) looks great on 1080p, but not this game … What have i done wrong ?
> Thank you !

I haven’t had that problem. Maybe try posting this to the Support forum for help.

I’ll try this, thank !