lag spikes caused by entities

Our realm("minecraft friends" owned by Kobe118) has extreme lag spikes, to the point where you can't even walk around anymore. When checking the F3 screen, I noticed over 60000 entities where it normally only says 200.

 

But even when the entity count is normal, we experience serious block glitches and the inability to move fluently.

 

There are absolutely no intensive redstone on this realm, we broke all those trying to fix the issue.

Animal farms have been reduced to around 10 animals as well. None of this fixed anything.