Not good news for me ... I'm running the latest version, latest patch of EU2 and my computer has had a major upgrade since the bad old days when I started playing EU1 and it crashed all the time. But now it's unstable again ..... five or ten minutes and bang - CTD.
There are a couple of wars going on, ships and armies moving around, the music is on, the game is at normal speed and resolution 1024 x 768.
The system is a Pentium 4 with GE Force 4 graphics, 256 RAM etc.
It runs Morrowind and various other games without hesitation
It was running fine with 1.05 ....

It was running fine with 1.07 - one CTD as far as I can remember.
What is this "AVI_back" business all about?