IF you are on windows XP through 7 you can uninstall ALL the flash player versions in one shot
you are on Windows 8 or 10 then you can uninstall the NPAPI version and the PPAPI version
This can be done with the Adobe Flash Player Uninstaller which you can get from Adobe here
I seen reports that this helps out a great deal.
Note: Windows 8.X and 10 Versions for ActiveX/EDGE; Flash is integrated into the OS and is not easily rolled back and it is not a good Idea to try and delete it as it most likely will damage your OS.
Hope that helps