https://www.polygon.com/2018/1/8/16862978/pubg-xbox-one-patch-performance-vehicles

Playerunknown’s Battlegrounds launched on the Xbox One with some performance issues that surprised some fans while being exactly what other fans expected. The game is in the game preview program, after all. The game has received yet another incremental patch today that is expected to at least slightly improve the state of the game.

This patch will help, but the team is very much aware that there is more work to be done.