FIAGallery wordpress plugin issue

So I am using FIAGallery plugin for wordpress.
Now the problem is when I watch a video, since it didn’t load enough it starts to buffer, to load.
You know, loading speed depends on your internet connection speed, i hope you understand me.
Now as soon as it starts to load it stops playing.
I dont know why, but can I fix this somehow ?

I would provide a link where you can see what happens but I cant because my website is adult website.
I hope these guys from wordpress wont get mad at me, but anyway here is the link
http://volimsex.com/galerija/video321/
Just watch any video and you will see what happens.