Since I installed Norton security on mac Sierra(latest patch). it's getting slow even I turned off scan automatically. It's especially happened with files on USB3.0 drive which is made by Lexar. It's very slow I can not edit MS Office files smoothly. It's very tough to use MS office now even if it's required enough memory to run. I need to scan USB drive every day. But I'm busy every day and need to use files on USB drive smoothly.
Are there any solution? Please advice me.