The Slider doesn't appear inmediatly

Hello!
Because it’s appears very slow the first part that is slide of the page, could you help me.

Because I noticed that it’s the same problem in the versión demo, this appears after to load the home page, the version demo don’t show the first slide inmediatly. I looked for a different solutions, but only find the priorizite in the code. Please help me.

I hope soon your solution.

Bye