I have a project that I was working on a while back. Somehow I introduced a bug that I can't figure out. It leads to extreme video and audio stuttering issues. I was wondering if someone could take a look and lead me in the right direction where to look.

http://scratch.mit.edu/projects/10728425/

Thanks

That would be caused by lag; your computer cannot keep up with all the things going on in the project. To minimize/get rid of it try reducing the number of active scripts going at a time; esp. forever loops.