Moonbender .. why not take a quick look at the troubleshooting section of the official forums. This is hardly a problem that just I am having. Otherwise I would not have posted like I did.
So, your impression could be quite wrong. My point was that using a common part, on a common OS, in the exact manner described by the author of the game should not cause crashes for such a wide range of users (take a look at the PC specs listed in the forums for the crashing bugs) in the mode preferred by that author.
As far as whether the game is in general full of bugs. I didn't say that. I have had no crashes in OpenGL. The crashes could be due to problems with Nvidia's drivers, but then Epic shouldn't recommend those drivers to us.
For what its worth, I am very impressed with the game and how well it plays on older systems like my brother's.