Infinity Ward has confirmed on Reddit that they are aware of and actively looking into the issue with Xbox One version of the game crashing for many users, including Xbox One X.
The game has been unplayable for some on Xbox One as the game crashes during key moments of the campaign, in MP, and Special Ops.
The studio has confirmed on Reddit that they are working closely with Microsoft to identify the reason behind this and are working to deploy a fix for it here soon.
We have identified an issue that is affecting some players on Xbox One X. Players affected are experiencing crashes. We are working with Microsoft to address the issue. We genuinely can’t thank you all enough for providing us with your ongoing feedback this launch, every bit of information helps. Stand by for more updates on this issue soon, and thank you for your patience and your help while we work towards a solution.
They have not stated when the fix for this will release. Infinity Ward mentions Xbox One X specifically in this post as to what they are investigating but many players are reporting crashing issues on all Xbox One consoles.
We’ll keep you updated.