I changed background_speed to “0.16” and now is okey – even on IE 10.
[segment id=”home2-heading” class=”slogan” background_color=’#374a4e’ background_image=”http://…..jpg” parallax_background=”true” background_speed=”0.16″]
<div class=”heading2″>
<h2 class=”title”>…….</h2>
</div>
[/segment]