Hi. I have problems with my Magento site theme which loads a lot of js code for sliders, social buttons and responsive code. The problem is that two of the elements - responsive slider and widget with products loads but dissaper for a 0.5s after load - which is very confusing from the viewer perspective.
Example: shopmages.com

Probably the js checks screensize and orientation of the device and decide which CSS to load. Could somebody let me know if its possible to avoid this blinking in JS elements when almost loaded ? I tried to use Full Page Cache to speed up php code and I got 10x decreased overall load time - but the js code is still needs too much time

Thanks for tips and suggestions
Paul