Also, in alignment with the OP's statement about us focusing on stability for 3.8, I've started drafting a "hard" list of things to test prefacing a release.
It's intended as a checklist to make sure we hit as many parts of the engine to ensure it's functioning without surprise gotchas we didn't catch in general testing, which is how we've had the instability slowly creep up on us until now.
As such, I've started a new wiki page that I'll be filling out with an as-exhaustive-list-as-possible listing that we can walk down and check off to make sure a release is as stable as we're going to be able to make it before getting it to the masses.
That page is here.
If there's anything you can think of that needs to be tested, feel free to modify that page or pass it along here or to me via PM. The entire problem we've been having is it's almost impossible for one person to think of EVERYTHING that needs testing, so even if I detail an exhaustive list, there's no doubt some things I'll not think of or forget that you people have noted or tested yourselves.