Feature request: Possibility to set up number of threads spawned

[Sommerwiesel]

I currently self-host ladder on my powerful dedicated server.
When I disable PREFORK, only 1 worker is spawned.
When I enable PREFORK, 32 workers (due to having 32 cpu threads) are spawned and the memory usage also sky-rockets.

Please implement a way to precisely set the number of threads ladder uses.

[satonotdead]

Are there workarounds? This seems highly important to me.