Ostranauts v0.8.0.16 is now available on Steam, and your clients should be updating shortly.
This patch has been in opt-in beta for a while, and seems to correctly fix several bugs that have been reported recently, particularly with OKLG performance and characters sleeping. (And we're still working on a larger update in parallel for the next milestone.)
Saves from 0.8.0.X should work. If you were experiencing issues in the older save, this patch may fix some (especially sleep and OKLG lag issues), but others may persist depending on the cause.