I've experienced it myself, and the video confirmed it.  However, if you're not having issues that's great!  The original resolution of the map could also have an impact, if you are using a very hi res map it can take more adustments.  Individual users will have to decide for themselves, I'm just speaking from my personal experience and what the graphic designer on Lynda.com experience was.   The import size may also play a role, I was using the default 1024 x 1024 settings.   As we all know, there are no absolutes in the computer world--experiences may varry.  Those of you experimenting may wish to also comment on your observations.

Generally speaking I was expecting more from Extended, but this is Adobe's first 3D forray--I'm sure bigger and better things will come!  This is my own fault, I should have tried the demo before buying.  I am sure I can still do some very exciting and intersting things I couldn't do with Photoshop before.  All in all CS3 is very worthy upgrade, I love the new tools and interface!  I will say this, in terms of stability and performance I've never had a better upgrade experience than with Adobe's products.