https://wccftech.com/pubg-xbox-performance-improve-gamedvr/

It appears that the PUBG Xbox performance can be improved on both Xbox One X and Xbox One by turning off the console’s Game DVR capturing feature.

As posted by Reddit user ‘Kiwigreen69 ‘ on the PUBG Xbox One subreddit, turning off the console’s Game DVR/Capturing feature greatly improves the framerate in the game. Users who have tried this out are reporting noticable differences on both Xbox One and the Xbox One X.