Hello!
From this weekend's testing we identified 3 showstopper bugs. We have put fixes in for them and those fixes look to be holding.
Right now on the Experimental server is a build that has all of those fixes.
We are planning to let this build run overnight and see if we discover any other showstoppers.
Please do come and play on experimental and try to break the build. Your character and your character's inventory will be copied over to the live servers. So you will not lose your level progress nor any blueprints you find.
For how to join the Experimental Server check this thread:
http://steamcommunity.com/app/332500/discussions/5/622954302100845882/