When I create RFTools Dimensions, things work perfectly well at first. I can enter the dimension, and fly around for 10 minutes or so. Eventually, issues begin: new chunks stop loading, than mobs stop moving(and they become impossible to damage or interact with). If I log out of the world, it brings me back to the homescreen when trying to enter the world.
I'm using nearly 200 other mods. Does anybody know of any particle mods that are known to cause this issue? I checked through the log, and there's no weird errors, so I'm at a loss as of how to diagnose this problem. All of the mods I'm using are theoretically stable, and none are MCcreater mods.