Being practical with your settings is essential. My support ticket channel is where we usually get most feedback, and so far it's been pretty smooth breeze there. The forums here (expected, of course) have most of the issues, but represents less than 1% of our user base, and we're finding a common theme of impractical resolution/AA expectations.
As developers, I think we tend to understand the guts of this stuff a bit more and therefore run more conservative numbers that are more or less practical for the hardware we have. This can contribute to why we don't see these same issues off the bat. Luckily, I have received a ton of compliments on SMP v5 so far, so I know majority of our customers are enjoying this. Hopefully we can get you happy too. Thanks @Cam!