Mcreator overloaded by mod when ran in test client

My mod is pretty light, on vanilla Minecraft it runs at 60fps, but on mcreator it overloads the test client and crashes the entire mcreator app (not the client). so i don't know what happens until i close out the test client. I checked the console and there was hundreds of "detected setBlock in far chunk" errors and the server fell behind 40 ticks. The reason i'm calling this a bug is that mcreator itself should not be crashing from a client/server overload. And if mcreator crashes, the client keeps running but with lag issues (Block items not dropping, no chunks loading etc.)