I'm making a new topic because the related topics are marked answered, despite the fact that this remains unresolved. Here is the "answered" thread: http://forums.adobe.com/thread/1236230
I'm an animation instructor and we're having this issue with Flash CC on campus... I've tried the fixes suggested in that thread, Flash is up to date; I tried the steps listed here: http://shanemarksanimation.wordpress.com/2011/01/27/fixing-pen-tablet- stroke-lag-in-photoshop-or-other-apps-in-windows-7/ and that actually worked but only for a few moments--Flash would be drawing beautifully but within a minute it would degenerate back into the extremely laggy and choppy drawing. Furthermore, it's not just tablets/cintiqs, even drawing with the regular mouse is laggy.
If we can't get this fixed I can't recommend my students keep using Flash, we would be forced to leave it behind. If there is any new information on how to fix this issue please let me know as soon as possible, thank you.