Falling block entity does not settle

[Screwy]

I play on version 1.15.7 with a variaty of mods installed. This bug comes up regardless of version, mod setup and operating system, it just depends on block gravity system turned on. 

Whenever a huge landslide occurs, my fps drops below 10 for ceveral minutes, till I type in the command:

/entity remove fallingBlock

or so. That happened more than once. My suggestion would be, to check for such events and automatically delete every falling block above a configurable amount of entitys. A simple integer in the server config should do the trick.

The lag occurs not because of the landdrift itself, but because of the countless blocks, that accumulate on the ground, bouncing into each other in small corners, that never settle down. I guess, noone will miss a few soil blocks.