Titanium picker scrolling lags for the first time

1. Application type: mobile
2. Titanium SDK: 1.7.6 (03/20/12 18:32 1e5f126)
3. Platform & version: Android 4.0
4. Device: Nexus 7
5. Host Operating System: Windows 8
6. Titanium Studio: 3.2.0.201312191547

Whenever I scroll the picker, for the first time there seems to be a small lag in scrolling. That is, when user scrolls the picker, there is a lag for few seconds and then users are allowed to scroll records continuously. This lags happens only for the first time.

Can anyone please guide me how to fix this scroll lag.

Here is my code:

function CreatePicker (rows, x, y, width, sel, initialValue) {
     var picker = Ti.UI.createPicker({
         left: x,
         height: Ti.App.pickerHeight,
         top: y,
         plat: '',
         width: width
     });
     var data = [];
     var v, selectedrow;
     data[0] = Ti.UI.createPickerRow({
         title: initialValue,
         font: {
             fontSize: 48
         }
     });
     var j = 1;
     while (rows.isValidRow()) {
         v = rows.fieldByName('id');
         if ((v != null) && (v != '') && (v != 'NULL')) {
             if (v == sel) selectedrow = j;
             data[j] = Ti.UI.createPickerRow({
                 title: v,
                 fontSize: 48
             });
             j++;
         }
         rows.next();
     }
     if (selectedrow > 0) picker.setSelectedRow(0, selectedrow);
     picker.selectionIndicator = true;
     picker.add(data);
     return (picker);
 }