Slow worldgen

[Bleb1k]

On linux with java temurin 17 when joining new world it generates many chunks and causes frames to drop to 5fps, vanilla generates world a lot faster + frames don't drop so drastically when generating new chunks while exploring

[mineLdiver]

Should be mostly fixed with dad384430402a57896c125ee5fce60351134731c

There are still some optimizations that can be done, but this should fix the biggest issue yet.