Interesting - firstly I'm surprised that it would be taking as long as 750mS to render at all - that's a really long time!
However, what I expect the jump in time will be due to is the fact that I have increased the pre buffering of rows that Scroller does from *3 to *9 - under the theory that ~80 rows should draw very quickly and overall give a benefit.
If you could try setting the new init option for Scroller "displayBuffer" to 3, and see how that goes for you (which will restore the 1.0.x behaviour) that would be interesting.
More generally, I'm curious to know why it would be taking as long as almost a second to render. Do you have a link you can share with me?