I have been using Blue host Shared hosting from November 2012 . I am hosting my 10 + domains with decent traffic. First month it went well and at the mid of December I started getting CPU Throttling which became great headache for me. Since I don’t want to change the hosting plan and want to stick with this plan. I start implementing techniques to get rid of this. I customized all my WordPress site for fast loading using CDN services and optimizing images also.By doing this it worked more better than previous but not worked well as I wish. Mostly Bluehost Server get busy at Night time (At my place). I requested and talk with customer support many times they replied me that focus on how to optimize your blog . I am so much headache that I get more than 90 + in Google page speed score. More than this I cannot do more for my blog. I repair and optimize all of mysql databases but bad luck for me.
The solution I did to get rid from this Problem is :
Delete Large File Stored and Reduce No of Directories.