Mike,
Which version of the Flex SDK are you using? There have been lots of improvements to constraints, so you may want to grab a new nightly SDK build from http://labs.adobe.com/technologies/flex/sdk/flex3sdk.html and try again. Testing on my machine it seems pretty quick. Peter ________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Sent: Thursday, November 08, 2007 6:03 PM To: [email protected] Subject: [flexcoders] dynamically adding constraintRows so, Grid is now deprecated. I thought I would try and embrace the new constraint layout API. One of my use cases of Grid is to dynamically create and remove rows based on user input. I tried to do the same thing with ConstraintRow and was successful. However, it get's really slow after a couple of new row additions. You can view the code here. compile using FB 3 B2. click on "make new row" button a couple of times and you'll see what I mean. http://pastie.caboo.se/115705 <http://pastie.caboo.se/115705> If anyone has any insight on how to make this not suck, it would be greatly appreciated.

