If you look at the way SG is structured as an AVN, you will notice it allows for significant branching. That creates an inevitable cascading effect each update where more renders are needed for any given scene because of the branching variations.As much as I am a fan of Ocean, SG season 2 chapter 1 being over 7000 renders is just excessive and biting off more than he can chew. Even DPC with his latest episode of BAD just crossed the 7k render for the episode and BAD is over 2/3 completed. I think there will be multiple renders that are used without a single line of dialogue in it just like in chapter 5 of season 1. I feel that chapter 1 being a round 4500 to 5k renders is a good sweet spot that provides lots of content for a new season with out going over board and would have kept the dev time to around 1 year.
I expect updates will either get bigger (i.e. render count) or will cover a reduced amount of in-game time. The latter can cause player frustration because an update may seem short if playing a single branch.
I mentioned this a year ago. It seemed obvious then that what Ocean is trying to achieve is very ambitious because of a cascading effect.