Well, I hadn't done it before because I was scared to sh*t of damaging my hardware, but I finally did it, and honestly, audio stuttering seemed even worse, happening more frequently.
So, explaining the situation: my AMD FX-8370E usually runs at 3.3GHz. I first changed it to 3.6GHz and it was no good. Right now I'm at 4.1GHz and no good again. I really don't intend to try higher speeds.
One maybe strange thing is that, although overclocked, my CPU Cores stays most of the time at 1.4GHz, even when playing the game, and occasionally, they change to 3.6GHz or 4.1Ghz.
Don't know if that's to be expected, or if some configuration from the BIOS is preventing it to run at maximum power (I disabled cool n' quiet).
Is this how it is supposed to behave, or is something not right at my environment?
The image below helps to illustrate the situation: