I just play mo-creature mods with maple-tree mods, but I have terrible lag because of too many mobs. So I removed the mo-creature mods. Sever has no problem (no crush and no lag). In console, the records of skipping mo-creature mobs show up continuously, but there's no monster in the world and Nether world. Except friendly mobs such as pig ,cow etc aggressive mobs like zombie. I want to resolve it. Plz help me TT