I'm working with 3 cameras on a complex shot, to put 5 actors in a convertible. screenshot:

two issues that slow me down. each time I move the camera or the actress, the whirling beach ball starts and lasts for a few seconds. what's happening? is it saving the file over and over? of not. but saving the file is important as I progress. because if poser crashes, which has been happening more often of late, I will lose my work, so after exch significant move I press CMD + s.  that saves I'm told, but where can I retrieve such a save if a crash happens? I looked in recent saves and could not find anything like that. Does it save it across my initial save, so after a crash I bring up that file it should contain the latest version? Is that what's happening?

appreciate your thoughts/knowledge...

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