I can confirm a random soft reboot after 48 hours of use. Nothing severe, boots up really fast and I can use it again. I personally can deal with it. It happened so quick when I was outside I couldn't get a logcat of it. I did a little bit of reading and I hear it might be a CM thing as other ROMs such as Exodus is also experiencing similar issue (or if there's any correlation to CM, just saying):
I realised it only happens when you multi-task and switch between apps frequently.
Another thing is, I too also observed a laggy lockscreen issue - it happens sporadically like, ~30% of time when you try to unlock your phone during the course of the day. Again, not really a big issue, but yeah just reporting what I observed.
And in case you're wondering, yes, everything on stock settings. Long time user of SlimSaber since the GS II days, flashing ROMs for many years now.