Ever since I found out about the way to edit a file in text mode instead of actionscript mode, I've had some success in combatting type lag.
You see my projects have several files with 10k+ lines. Some have over 40k lines. I think having them open though taxes the system somehow, because I'll do something like ctrl+f, and it will pause for several seconds, Flash Builder will say (Not responding), then it will come around and I can input my one command. Then I need to wait 2-10 seconds again to do something like click my cursor somewhere on the code.
If I don't edit in text mode, it can take upwards of 2+ seconds between key presses.
Maybe there is something not configured right in my project to handle over a hundred thousand lines of code in several different files.
Do I need to declare more buffer memory? Maybe the thing is virtual disking it up hard.
Any suggestions are welcome. The only one I don't want to hear is,"Don't code so much in one file" as there is nothing wrong with it. I use OO correctly.
If your using OO correctly then your stacking your packages / classes in a single file..
And what would be wrong with that is what your experiencing now...
Regardless there comes a point with any editor that too much data in 1 file is too much for it. If you really need to edit silly files of rediculous size then I would recommend ultraedit, and then compile in FlashBuilder.