[Plugin: Disqus Comment System] Disabling server side rendering for fast load?

I have been using disqus for quite some time now. I wanted to ask a few things regarding disqus. If i disable server side rendering, will it make my blog load faster?

And one more thing, Are the comments pulled from disqus’ server or from my own blog’s server?

http://ww.wp.xz.cn/extend/plugins/disqus-comment-system/