MSP performance in Max 6

I love the features of max 6 but after a brief look at it I am very concerned about audio performance in Max 6. I suppose that the switch to 64-bit audio processing is the reason for this hit in performance.

Of course I can see the advantages and of course I like the improvements in sound quality. Still I am having problems to understand the point of releasing a new version of Max which out of the box nearly doubles the processor load of existing patches...

I would at least like to have a choice weather I want to use 64-bit high quality processing or weather I go with lower quality and better performance (while still having the benefits of the great other improvements in max 6).

What about an option to turn 64-bit processing on and off?

cheers
B.