Aye aye Fozz, I just posted that in case.
It's never failed to work for me, in fact at the end of the day nothing has really failed in my install so far and runs more stable than FSX does on my system. Not that FSX runs badly on it, but framerate in some sceneries can be a bit low.
But as for SH5, it runs stable and smooth and every time. In fact the only time it ever failed in any respect was after I did a system restore, and according to tech support this messes with the registry in some way and caused SH5 to not be able to connect to UBI's master servers. And a simple reinstall fixed that. And because of online saves, I didnt even lose any campaign progress.
Im beginning to believe that the issues with instability that some experience may well be system dependent, and may well be due to hard drive performance or viruses, adware, spyware, and many other things of that nature. Even virus scan programs, system cleaners and the like can play havoc with things.
I know that about two years ago I had a trojan in my system that played havoc with anything I tried to run and had errors and crashes all the time.
So much so that I was so sick of it I took out that HD and slapped a nice big new one in and have had no problems ever since.