Is it safe to say that if you import a vehicle model that isn't properly developed and performance with ELS corruption, you are more likely to see a crash. Also making sure scripts are correctly installed and everything is up to date will help keep the crashes down. From what I've taken from testing is that most of the crashes are coming from vehicle model files being unstable.
Not to mention I'm running a computer with 1gb video graphics (which is a bit out of date @ 2 years old), and 8gb installed physical memory with x64bit Windows 7 Ultimate. My Hard drive is a bit low on performance end at 5.9 windows scale HDD 500GB. 2.9GHZ 4 core processor.
Again I believe it's a combination of multiple things but from my testing end it's been mostly vehicle model files being unstable with ELS and GTA optimization.
Any thoughts..