Slow back end of wordpress site

Hello to all. I followed the optimizing wordpress and it worked for the front end, however the back end is so slow it takes like 5 retries to load my account control panel. I have w3 total cache installed as I’m not as tech savvy as I want to be. It works, and all of my images are optimized and so is my data base, however, none of these changes are working. I even tried removing the plugins I don’t use or will never be updated and I do check for an update every week. How can I speed up the back end so that I may have a good experience like I used to have 2 years ago when I installed on to the server.

What’s your site?

There is a back up option on wordpress. You can also add plug in.