OK rather than update your system and drivers etc I suggest mind melding with the CPU and software ;). Best do nothing! If it's broke don't fix it :)
I mean you can backup and roll back right?
The same things BTW have happened to me (often in fact) and I have always found solutions. And where upon I could recreate an issue ruling out third party possibilities I would log the issue with Cakewalk. Once (with X1C) I had to wait for X1D, after I could clearly reproduce an issue.
Actually I spent a whole day fixing instability with X3 when I installed it, it turned out to be third party drivers (something that wasn't happening with X2).
You don't seem to even want to explore this possibility.
YES - I have dealt with corrupt projects and crashing in the past.
But what do I know :) I must be lazy ;)
(the reason why I have a stable system is because I get my hands dirty).