Thank you so much for playing and for this great feedback!
Regarding the not auto-rewinding and having to press <z>, I think you have a point and we considered it early on, but we realized that since clones have to be a 1 to 1 replica of your past self to stay in sync, we wound up with a lot of clones just standing in the beginning, there may have been away around this though. Definitely something we could reconsider.
I think we could absolutely stand to either speed up (It’s capped at 6 seconds but this quickly adds up) or remove the feature altogether to make the game flow more smoothly.
Again, thank you for this feedback.