[ruuk]

It will return to normal after the end of the message, or if i hit control to stop it.

No it will not begin at the beginning of a sentence, It always happens when the sentence is a bit long, so after espeak first pauses in the middle of a message, It suddenly becomes like that. I don't know if espeak pauses or this problem creates a pause there.
It is constent, so If i keep reading the sentence over and over i manage to get most of it read with the normal speech. But it always happens with long speech lines.
TBH, I will test this more - I'm not sure if this happens after a period or a punctuation or not.
I also think that this started to happen when i set espeak for direct output (the one that you instructed me to do at above posts)
I'll upload a sample recording of it happening tomorrow

Well, it isn't really punctuation that I'm wondering about (though I suppose it could possibly have an effect) as much as multiple lines (which are usually one for each sentence in this context). I'm not really sure what to make of it if that is the case, but every bit of info helps

You might try disabling 'Play Speech Directly Via eSpeak' and setting a Player (to something other than XBMC PlaySFX) and see if that changes anything.