Slow Code Editing in Flash Builder 4.7

For some reason my Code Editor works painfully slow. I see that other folks have experienced this issue. I don't want to switch to another IDE. I have already increased the values of Xms and XMX (Xms1024m -Xmx2048m) and also created a new workspace but it did not make a difference. Other appliations work fine. I am using a i7 laptop with 16GB of RAM.
FB was working fine and then all of a sudden started to slow down. I believe that it happened after I installed Apached Flex SDK but I am not positive. I have other IDEs that I use for testing things so that might be a problem as well. I would like some help to fix the slow code editing because it is making it difficult to use FB and I don't want to change.
I have Creative Cloud account.
The size of the project is 19mb.

Hi Blake,
In another page (http://forums.adobe.com/thread/1056583), Adobe states that it will be possible to download 4.6 in alternative to 4.7, to still have the Design View. However, I have not seen such possibility yet.
I will not say that "real programmers don't use design mode". They do, if it works fine.
However, the Design View was not very useful for mobile projects, if you wanted to create an interface which, at run time, adapts to different screen estates.
It was very good to draw an initial mock-up, but only the simulator (and the device) can say how the app really looks like (if you want to know more, please have a look here: http://aliencoding.com/2013/02/22/adobe-flash-builder-4-7-has-no-design-view-is-it-blasphe my-no-but-the-software-contains-some-other-blasphemous-aspects/).
If you develop for desktop, then I agree the Design View lack is a real drag. I think Adobe should at least lower the price of the program, now that it's been scaled down for (I think) copyright issues (the Design mode relies on Flash professional components that was not donated to Apache).
I love this platform because it really saved my butt in cases of real fast devployment, BUT NOW it lacks support for Windows 8 that PhoneGap has...
Can we say... it is a legacy framework by now?

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Be a Shepard and not an iSheep.

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Message was edited by: Cindered Monkey
Changed the title to better reflect the situation.
Also added a blurb to the top.

Well, thought I should update just in case someone else has a similar thought.
I ran out of time to wait and it seemed I wasn't going to get a response so took the chance and bought the upgrade.
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Slow Code Editing in Flash Builder 4.7

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