Particles in container penetrating through wall

[JuhaHo]

I have question about the tyCache concept. I'm caching a simulation and simultaneously rendering it in another session. The simulation in rendering looks a bit odd. I looked into cache directory and see, that tyMesh file has been updated latest in July. So should I need to wait this simulation to the very end until I see the cache rendering correctly? Instead of Gigabytes, the tyMesh file is 179 KB in size while the latest frame is 2 287 KB.

Compared to Phoenix in the same animation, I see it rendering correctly after each simulated frame (*.AUR -file).

How does the tyCache really work?