I'm getting consistent repeatable g3d.dll CTD's always with the Exception code 0xc0000005 and Exception Offset of 0x00077e65.
While it happens anyway after 10-20 mins of flight, seemingly anywhere in the UK (i'm running ORBX England) I can force it to happen by opening a second view panel on AI traffic and using a key to cycle through the AI aircraft fairly quickly.
Oddly, if i run process monitor two things happen:
EZDOK closes and cannot be restarted again until I restart the computer
The same CTD cannot then be reproduced, although i will occasionally get StackHash module CTD's instead.
At no point has VAS been an issue, always plenty available when the crash happens.
Strange.....