Mo' creatures crashing server

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    I am trying to run a server with a few friends of mine on version 1.12.2 with mo creatures in it. I know how to change the custom mob spawner on single player mode so that it limits the spawn rates and doesnt make the game crash however you dont have this option on aternos. Is there a way around this because this is the only good animal mod that i have found that works with morph.