[game crashes after some time playing]

6 hours ago, sburke said:

Does the size of the scenario affect the crash rate?

No.  Very small battles just as likely to crash as larger ones.  

[game crashes after some time playing]

I've experienced crashes to desktop with CMFI, CMRT, and CMFB since February.  (I always update my nVidia drivers whenever a new version is available so I have thus used multiple drivers since that time and none have fixed the issue).

It's not severe -- I play turn-based and can sometimes go 50 or more turns without experiencing it.  And though I try to save every couple of turns, the bug has an uncanny tendency to strike any time I get distracted and play 6 or 8 turns without saving).  Really makes me wish CM had an auto-save.

If there is anything at all consistent about the crashes I would say they are more frequent in longer play sessions.  

[game crashes after some time playing]

I've been playing CMBN, CMFI, CMFB, and CMRT since last fall, v.4 for all, using Windows 10 and latest nVidia driver (391.35 / 3-27-18) and have recently begun experiencing crashes with CMRT.  Had one quick battle crash multiple times.  Had a three-hour stock scenario do fine for the first two hours, then crash (as I was trying to save!).  I have no AV program other than Windows Defender.  

[FI 4.0 bug with Italian vehicles]

I'm experiencing the vehicle "jump" issue as well.  And it's German tanks, not just Italians.