Broken Slime Block behaviour due to lag

Slime block contraptions stop working if the server is lagging. The first two videos show the slime block launchers working, the last two videos show them failing, after lag was introduced by spawning ~1000 villagers.

Steps to reproduce

1. Download the .nbt file and place it with a structure block into your world

2. Test that it works

3. Lag the world (for example by spawning many entities)

4. Test again. Now it shouldn’t work anymore