A few months ago my site started having issues.
My writers suddenly had issues logging in
The hearts/likes are no longer linking to cookies
The views for each post are not updating for days
Each post is coming out a few days later than when posted
Basically the site has suddenly become unusable for me. I was told by my "web guy" that he thought it may have been a caching error but things like super cache don't do anything. He was pretty sure all the issues came back to the theme. I've gotten rave reviews about the site and the way it looks and I would hate to change it.
It's definitely not a theme-related issue. Nothing in the theme can delay loading of content. You'll have to isolate the cause within your WordPress installation by walking through some troubleshooting steps. First, completely disable all of your plugins, then re-download a new copy of the theme from ThemeForest and overwrite all of your current theme files on your server with a fresh copy and see if that fixes the issue. You won't lose any content or settings since those are stored in the database, but if you have made any changes directly to any of the theme code then you should make a backup of your current theme files so you don't lose your changes.