Single Column with Cache

I was wondering if using Litespeed and Cloudflare caching has any effect on the Doc Preview? I’m finding that my PDF file seldom gets rendered in the Single Column with Doc Preview page template. I have to keep refreshing the web page and after 2 or 3 tries, it shows up.

You can try it here: https://telechrome.com/techmechs/?page_id=889

I’ve added the caching in an attempt to speed up the page loading. I’m trying to optimize everything for speed, so…

There’s a button for twitter and pinterest at the bottom of the page. The pinterest button seems to slow down the loading of the page. It gets stuck there waiting for a second.

Not sure if these are from Download Manager or my theme. Can’t seem to find them anywhere in the templates. Would really like to get rid of them to de-clutter and speed up loading.

Any help would be greatly appreciated.

The buttons for twitter and pinterest were in the theme, and I managed to remove them.

So the issue is, slow loading or no loading at all of the doc preview of pdf file.

Thanks