For some reason, as I use Guitar Pro 5, the RSE will eventually degrade; what I mean is, every time I play something using it, no matter how brief it is, it will get more and more of a static sound (except usually the sound will stay un-staticy for a few plays), which will eventually get bad enough that I can't even use Guitar Pro. Once I let it sit for awhile, without playing anything using RSE, it will go back to normal, although it can sometimes take quite a while.

What I'm asking is, what could be causing this, and how could I fix it?

If you want an example, I recorded one using my camera. The camera makes it worse than it sound worse than it really is, but not by much. And no, that sound is not anything scratching against the speaker, that's actually the static sound.