@DusX    Thank  you   so much! I got it. 

@bonemapNot sure how we would have missed it. Sorry about that. I will look for it an follow up with you.Options on Mac are different that what I posted above. This table only applies to Windows.

Thanks @dbini  That´s a total revelation !!Best,Maxi

@bonemap said: Is this assumption correct?  Yes. That's right. If you choose a render speed that is < 100%, every time based function in Isadora is slowed down proporionally (i.e., Wave Generators, Envelope Generators, Trigger Delay, et. al.) This gives Isadora more time to generate every frame and thus should result in full and accurate frame rates. The only caveat is that you cannot have real-time input because it is not slowed down proporionally.Best Wishes,Mark

attached is a very basic starting point using this method.simpleLiveCollage.izz

Glad to be of help. Best Wishes, Mark