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.
It’s not just the X. My S just crashed after I took most of the day updating and reinstalling. Played 3 games and then BAM! Crashed.
I'm not associated with Modern Warfare, sorry!