A driver affecting a web browser? I doubt it. If I am having a driver conflict with opera and opera alone, then something is coded horribly wrong in opera. These crashes seem to happen on any PC I use opera on. One time I was in the middle of typing a large email into my webmail site, and opera crashed causing me to lose 30 minutes of my time reconstructing said email.
Opera is a very fast browser, perhaps the fastest (IN MY OPINION) and it works really well, however, the crashes along with the fact that I am limited to what the developers feel I should use, make me stay away.