When first time opening <http://plenuum.com/> the images are blurry and become sharp only after a Command+R. 

I've tried but could not fix it with WP plugins. 

Any idea how to solve it?

Thanks

(We've started having this problem after directing our domain (plenuun.com) to the WP's ip address.)

**PS.
Finally I've found the problem. I had to turn off the caching and the image resizing in the WP theme. Thanks for your help!**