Ableton Forum

I just figured something out that would have saved me a lot of trouble if it had been mentioned in the Live manual: Live's song tempo automation is not continuous (in version 7 and below). Although you can draw a ramp in the song tempo automation lane, Live will only sample its value, and adjust the song tempo accordingly, at the beginning of each 16th grid line.

further details here: http://www.basementhum.com/2008/02/song ... -live.html

This becomes a problem if, like me, you're trying to work around Live's lack of groove templates by using song tempo automation, as described here:

http://www.basementhum.com/2008/01/able ... ntize.html

could you explain this a little more?

Do you mean that changes in automated tempo
only have effect every 16th note?

if you check the article i inked to theres a diagram and further explanation.