Theme PHP files is very slow server loading time

Do you see the same problem if you temporarily switch to the Twenty Fifteen theme?

Ok, then the problem is definitely with the theme.

As that is a commercial theme, we ask that you please go to their official support channel. In order to be good stewards of the WordPress community, and encourage innovation and progress, we feel it’s important to direct people to those official locations.

http://forum.muffingroup.com/betheme/

Forum volunteers are also not given access to commercial products, so they would not know why your commercial theme is not working properly. This is one other reason why volunteers forward you to the commercial product’s vendors. The vendors are responsible for supporting their commercial product.

You’re welcome!