You're being generous when you say "there's really very little evidence so far that we are". There is absolutely no evidence that we are.

And maybe the simulation is being run by an advanced civilisation that ITSELF is running in a simulation created by an even MORE advanced civilisation . . .

What did they need to shoot about a laptop that needed such high speed videography? Laptops don't exactly move a lot.

Perhaps they didn't want to discuss the technical stuff to protect their proprietary system

How do high-definition, slow-motion cameras work?