Okay... please answer this so it helps me help you:
Okay, so step 3:
-Did you have issues before or after you installed any one of the following two apps:
Dr. Cleaner
CleanMyDrive 2
-Are you using a Apple/Mac certified mouse? Is it wired or wireless?
-What is the age of the Mac you are currently using (when did you buy it and how many times has it upgraded the operating system)?