In a recent Five Fires video, they got the "performance anxiety" Earthquake experience on video. That was an interesting thing to see.
All the sound effects audio happening, but no collapsing road/tanker truck or derailing subway train. However, the support columns still worked, so it looked like an invisible supernatural poltergeist wreaking havoc.
I've also noticed in a few different videos that the water isn't forceful enough to knock over the scaffolding to reveal the "Welcome to San Francisco" graffiti.