Choppy Fullscreen flash video

Hello,
I have a late 2012 21.5 inch base model iMac. And for some time now flash video has been choppy in fullscreen in both Google Chrome and Safari. It wasn't always so, when I bought the iMac last year in December it was working fine.
I tried reinstalling the flash player plugin but with no effect. Sometimes fullscreen video works fine, other times it is not. Sometimes putting chrome in fullscreen mode then making the video fullscreen improves performance, sometimes it does not.
I also have Windows 7 in Boot Camp and fullscreen flash videos (like youtube) work flawlessly all the time.
I checked the forums for different solutions, none work. One idea was to make sure that the dedicated graphics card is actually working and not the integrated one, but the new iMac does not even have an integrated card, just the dedicated one.
I have no overheating problems and as far as I can tell only flash video has a problem.
Anyone know how to fix this?

I also found a solution that works for me. I completley uninstalled Flash from my Mac. I couldn't happier with the results. My Macbook Pro Battery life is more than doubled, It is no longer ever too hot place on my lap. My fan/s almost never come on anymore.
I use Safari as my main browser. Most sites detect my lack of Flash and convert video and adds to HTML just fine. Netflix works fine on it since it works off Siverlight. If I do need to visit a sight that requires Flash, (hulu) I just open it in Chrome which has Flash built into it. Visiting Flash sites on Chrome by the way is the only time my Mac gets hot and requires the fans to come on. Best fix I've ever done for my Mac. Litterally everything I do or run my Mac is faster and smoother. I no longer have sticking or spinning balls waits while flash decides if it needs to be working for this for whatever process or app I'm trying to use. Life on my Mac has been grand since Flash got the boot.

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