Check this out: https://spark.lucko.me/x3kOqIpW4P

Have a simple mob farm, add EvilCraft spikes and pedestals to drain blood. With 8-10 mobs near these spike, the game grinds almost to a halt.

You can try disabling the Parkour ai in the config for now until I find a way to optimize it further

Which option is that?

I'm guessing: "Enable jumping ai" = true ?

Yeah