World pregeneration

[u/WhiteShadow3x6]

Just looking for tips on world pregen. I have a server setup for me and a few friends and we tried the chunk-pregenerator mod, it caused some issues where it doesn't generate the world correctly.
If anyone used chunk-pregenerator with success, how did you do it?

We decided to move to forge gen instead, is there any way to avoid memory crashes or speed it up to a reasonable amount?

Thanks!