We have big issues about upgrading to titanium 9.3 (currently 9.0.3). With the 9.3 sdk version, our listviews on android are very laggy and freezing (they are smooth on v9.0). I tried to lighten the list items (remove images, events I listen : onscroll, onmarker) and just keep some labels, it is a little bit better but not comparable to the smoothness we have before.
The code is simple, i use Alloy, load data from a http request and instanciate list items from templates, that i put in a section and insert in my listview. (we have no problem with our iOS version of the app).
Here is an example of code reproducing the problem (i removed the assets folder) :