Alex’s Flex Closet

Lately, I’ve heard many complaints about horizontal scrolling performance in DataGrid. Vertical scrolling has been optimized, but horizontal has not. I found a bit of time to put together how to subclass DataGrid and try to optimize horizontal scrolling. I’m sure there’s bugs and I don’t know if I’ll have time to fix them and the usual caveats apply.
Hope it helps. It should work with any Flex 3 SDK version.
Download Source
In the example, the top DataGrid is not optimized, the bottom one is. Make the screen bigger and you’ll start to see and feel the difference.
Run Example