I've got a blinking text on my Vantage Premium theme

And I don’t want it… How can I change it into normal plain text.

What’s the problem:

When I’m editing the text on my WordPress dashboard it looks like I’ve got normal text, but… At the moment my slideshow (Meta Slider) is moving, the text is some kind of bold (at least boldier then he was before). For just a sec. Then with the next slider movement it turns back into normal text. And it goes on and on…

Anybody got an idea to stop this?

Thanks!