Adobe/Macromedia Flash is and probably will always be an inefficient resource hog. However, sometimes there really is no other choice since some websites won't make an alternate version available if you're on a computer vs maybe a tablet

My Mac Won't Let Me Download Adobe Flash Player 2017 Version

Simply having it installed probably isn't going to slow down your system any more than any other plug-in if it's not being used. But displaying Flash content is going use a lot of CPU resources. The worst is when you're viewing a web page with several ads (especially 'floating' ads) that each have their Flash content.

My Mac Won't Let Me Download Adobe Flash Player 2017 Download

Adobe Flash Player is a free software plug-in used by web browsers to view multimedia, execute rich Internet applications, and stream video on your Mac. Adobe Flash Player is the most popular multimedia player plug-in available. However, recently there have been security concerns which has threatened its popularity as users seek safer alternative solutions. Restart the browser, after which Adobe Flash Player for Mac should be activated. Update Adobe Flash Player for Mac regularly. Once you have Flash Player installed, you need to remember to update it regularly (e.g. Once a month) to avoid any security issues. To check whether there’s a new version of Flash available: Open System Preferences.