This is a big problem for me too. Whenever I try to keep 2 or more animals (cows, horses, donkeys, and mules) in a pen I get serious lag whenever I come near the pen. Sometimes it speeds back up for a couple seconds but then starts lagging again. I am experiencing this in single player worlds. It possibly happens when there are to many animals just within one area.
chris stahl
This is a big problem for me too. Whenever I try to keep 2 or more animals (cows, horses, donkeys, and mules) in a pen I get serious lag whenever I come near the pen. Sometimes it speeds back up for a couple seconds but then starts lagging again. I am experiencing this in single player worlds. It possibly happens when there are to many animals just within one area.