You have the gateway for this. But it's actually ironic that you can switch characters on a whim in the gateway but not in the actual game. They really do need to allow for character changes without a force relog.
So... i was able to play smoothly without a crash today when activating safe-mode. Don't know why i didn't think of that before. Going to fiddle around with graphical settings some other day and see if i can pinpoint what's been causing my crashes.
What I'm am mostly interested in is, what the different tickets ID indicates. It would be easier to try and troubleshoot stuff yourself is the error-code actually meant something.