# Compiling in Flex vs WonderFL

**URL:** https://forum.kirupa.com/t/compiling-in-flex-vs-wonderfl/298482
**Category:** flash
**Created:** [October 19, 2009, 9:29pm UTC](https://forum.kirupa.com/t/compiling-in-flex-vs-wonderfl/298482 "2009-10-19T21:29:12Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Dan0](https://avatars.discourse-cdn.com/v4/letter/d/97f17d/32.png) [@Dan0](https://forum.kirupa.com/u/Dan0)
#### Post date: [October 19, 2009, 9:29pm UTC](https://forum.kirupa.com/t/compiling-in-flex-vs-wonderfl/298482/1 "2009-10-19T21:29:12Z")

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Hey,  
I have a weird problem… If I compile this [http://wonderfl.net/code/445a2a1f8d3da5a5c673d34919ff438f008e86bf](http://wonderfl.net/code/445a2a1f8d3da5a5c673d34919ff438f008e86bf) in WonderFl it works great in both my browser and on my desktop.

However, when trying to do it in Flex - Line for line - it runs very badly struggling to get 5fps.

This doesn’t make any sense, WonderFL uses the flex engine to compile so why does my SDK suck? I’m doing this on OS X as well by the way… if that makes any difference?

Thanks for reading/helping,  
Dan