I found out that there is like 200 mobs under spawn, this is stopping people from making their mob farms work. I think this should be fixed aswell because it will stop the lagg. This may not follow the correct format but I had to quickly post this. Thank you!
@CypriotMerks

 

Yeah, @AgentWifi you're the mod, could you tag Cyp?

 

It's always been like this, it isn't urgent nor does it effect anything.

Mob Farms count the mobs in the AREA, not the world. There is nothing wrong with current mob farms, I've seen plenty of pigmen farms working fine. The only reason Endermen grinders aren't working as efficiently is because everyone lives really close in the end.

 

The amount of mobs at spawn causes lag, I don't think it effects mob grinders.