Kingdom Hearts weird Half Speed issue

OK, I´ll take your word for it...I found it strage that there is no crackling sound or moonwalking Sora though...

The other games I got all work fullspeed, NG Sigma, Dragon´s Crown (2d though) and Saint Seiya Sanctuary battle, I am on this emulation thingie since the Nesticle days so I know that a game may not look demanding but it is.

Thanks for your time