On my minecraft when I start up my single player world there is a HUGE lag zone around my base it's so bad I am getting 0-1 fps and there are over 3500 entities and when i leave the zone I get 45-50 fps and there were roughly 80 entities in the area I tried to do the kill all command in creative and i died which happens when you use that command i quit because it would not let me re-spawn when I started back up my single player world the entities were gone for 10 seconds then they re appeared (keep in mind im in peaceful mode) can any one help me please?