a bunch of magma cubes cause a lot of lag in nether

[varencilator]

Is your feature request related to a problem? Please describe.
I noticed going to the nether when there are a bunch of magma cubes (the more the laggier, tested by command killing all magma cubes causing them to spawn more smaller ones) lags a lot. Found the issue with Spark profiler mod, see here: https://spark.lucko.me/lBUSzQ6CXY
The slime entity tick rate goes super high and takes up all the CPU usage with slime entity growth logic when there are a lot of magma cubes near relevant blocks in the nether.

Describe the solution you'd like
Perhaps a cap to how many magma cubes can grow at once to reduce tick lag.

Additional context
Add any other context or screenshots about the feature request here.