The game is stuck in Game Menu and "Back to Game" button does nothing.

Sometimes it works... after letting the game run for a while.

The game has become substantially slower on NUC... it takes 2 minutes to generate a world... chunks are bloated to the point of toppling your entire architecture and you just keep filling them with more hardcoded entries.

This does not look good for the future, you probably need to add progress bars to some processes that are faster on 65+W computers now.