STL in Games, causing me headaches!

Yeah that was a bug in my case, I had fixed it in the performance branch as it was being called EVERY time resource was loaded, I was using it to 'reload' scripts, however it was definitely unnecessary.

So when you get to about 1/2 the screen of actors you still have consistency?

If you ended up grabbing the 3rd party libs before you will need to grab it again for the profile branch, I have gotten Box2D to work well with multi-threaded jobs, it seems to help keep a consistent frame rate, when running in visual studio it seems to give a slight jerk, but when run outside it runs great.