I don't know spanish, but I'll be damned if that stops me of understanding this.
I'm fairly certain that if it says
jugable, they mean playable.
Lento is
slow. Anything with Buen, Bueno, or Perfectamenta in it is good, naturally. (i e perfectamenta jugable / Buen Sonido)
Things like
errores,
sprites and
frame rate speak for themselves.
Others, like Ralentizaciones, scare the hell out of me.