MONS v0.6.0 potential issue "crashing" server in The Other dimension

We have been experiencing a crash on our server and unsure what the exact cause is at this time but one consistency has been it always happens when someone is in The Other dimension. We've had 0 issues until people started going in.

The issue is it's not fully consistent, I've flown around The Other for an hour with 0 crashes but then logged back in while in The Other after a few hours with no one else on and immediately it crashes. I say "crash" in the title as it doesn't exactly crash but CPU usage pings to 100%, people get kicked, unable to join etc. I have to force restart my ubuntu server container to get it to work again, even my Crafty Controller panel is unusable during this time hosted on the same container. I know it's something with the modpack/Minecraft now, as monitoring via atop shows a sharp jump in CPU usage from the java process but it happens so fast I can't catch much info during it before everything becomes unresponsive. In a matter of seconds it goes from fine to a completely unusable state.

Seeing if any other server hosts have experienced a similar issue whilst I dig in deeper. Can provide any info to correlate stuff.