Crashing in GR
I have been having a similar problem since ultra-mode kicked in. I was going with the assumtption that it was my video card either overheating or drivers.
As is seems now, after monitoring temperatures more closely my CPU is getting worked a lot more when playing and, as such, is over heating.
I cannot say that is your problem, but you may want to, at least, consider those areas. My uneducated guess is that GR (and more pointedly, the new graphics) is really separating the chaff from the wheat as far as our systems are concerned.
* Freedom -
PlanetStar - 26 Earth/Kin
Mary GoldThorne 18 Corr
* Infinity -
BoltStar - 28 Blaster
PlanetStar - 24 Earth/Kin
Tempest Howl - 30 Def Son/Son
I don't know if this is happening to anyone else but I keep on randomly crashing in Praetoria - it's usually accompanied by a fatal error saying that a pigg file is corrupt. I've tried verifying the files, and deleting the pigg files and the checksum but it's still happening. The files that I've noticed doing it so far include the map in Nova Praetoria (crashes when opening the map), female footstep sounds, buildings in Magisterium, one of the loading screens, and one of the Martial Arts booster robes - there doesn't seem to be any form of pattern.
I've also been randomly crashing to the desktop whilst zoning in and out of missions and when training at Praetor Duncan.
This hasn't happened at all before playing in Praetoria on the live servers.