Hi,
1) I haven't noticed any slowdowns when using +1000 items in the TIWAdvLUEdit.
Can you please provide the following information so I can further investigate this issue?
- Which IntraWeb version are you using?
- Which browser are you using?
- Which browser are you using?
- A ready to run sample project that demonstrates the issue.
2) Unfortunately it's currently not supported to asynchronously updated the items of the control.