Today we've released two updates on Xbox One: Precursor and Castles & Coffee. Both bring bundles of new content to Subnautica. Both take steps towards improving performance to acceptable levels. Performance on Xbox One is still not good enough. We know it, and we appreciate you continuing to give us feedback on this point.
There will not ever be a single update that lifts performance to an acceptable level. The road to good frame-rates is, and will continue to be, a gradual one. Each step building on the last, each step leading to the next.
Precursor and Castles & Coffee don't bring good performance on their own. They do make progress towards that end goal. Our next updates will continue to bring gradually improving performance.
Jonas, Max, Mario and others continue to devote themselves to raising frame rates, reducing hitches, and generally lifting performance to the level you, and the game, deserve. Thank you for playing Subnautica during development. Your feedback, including that about performance, is invaluable, and we are very grateful for your support.