In general the "cleaner" apps do more harm than good. Often they remove files that are needed by the Mac. The forums are full of users with computers that no longer work correctly after running these so call 'cleaners' (Memory Clean, CleanMyMac, and MacKeeper). Do not install any third party so called Mac cleaning utilities. They can do harm to your Mac.
I suggest at a minimum you run the OS X Yosemite 10.10.5 Combo Update
https://support.apple.com/kb/DL1832
MORE INFO ON WHY RUNNING COMBO FIXES ISSUES
Apple updates available from the Software Update application are incremental updates. Delta updates are also incremental updates and are available from Apple Downloads (software updates are generally smaller than delta updates). The Combo updates contain all incremental updates and will update files that could have become corrupted.
Combo updaters will install on the same version as they're applying--no need to roll back or do a clean install.
"Delta" updaters can only take you from one version to the next. For example: 10.10.4 to 10.10.5. If somehow the 10.10.4 is missing something it should have, and that something isn't changed between 10.10.4 and 10.10.5 it will still be stale after the delta update.
Download EtreCheck and paste results here for help troubleshooting.
http://www.etresoft.com/etrecheck