Here are some self-help steps you can try to optimize the loading speed of your site:

 Check your speed between each one.

Clear the site cache (Dashboard-->System & Settings-->Optimization -->Clear Cache? This is probably the most important button on the site. Use it often.

Empty the trash (site map --> show hidden pages)

Remove the extra versions? -->system & settings --> Optimization --> Automated Jobs --> Remove Old Page Versions.

Clear the error log: Go to dashboard-->reports-->logs. Click the green button and save the CSV export to save and send to us.

Then delete all.