Hello dobsy
In the morning, the filter will stay at 100% and deplete as the night goes on (its toxic out at night!) I may make the percentage slightly lower at first so the valves functionality is better seen.
As for the physics I've tried tweaking the physics settings so it runs at 90hz and has better collision, but I guess that didn't work.
maybe the terrain/ground is too thin
Again, thank you dobsy! Have a good rest of your day.