Does BioWare REALLY expect every user to be that good at debugging drivers tweaking the computer?
If that is the case they deserve to fail big time.
They don't need to expect every user to be that good... if you go by the number of users posting on the forums most people are not having game-breaking issues at all. I'm certainly not having trouble finding people to run flashpoints.
Users demand updates (shadows in particular have been a big complaint since launch)... no matter how much you bug-test an update there will always be some users that have issues. *shrug*