The MacOS Sierra problems

So, I've updated for Sierra today, and everything seems a lot at first, but I now have two fairly large problems:

(1) the computer is not picking up one of my sound, internal or external devices.

(2) there is this weird constant flickering everywhere on the screen, and things like opening a folder form the dock go layered with lots of glitter instead of both.

Anyone got these questions or knows how to solve?

Restart several times will usually start to settle in place various glitches related to new updates.

Tags: Mac OS & System Software

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    Mdworker (15) 430 MB

    Airmail beta 283 MB

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    Sandboxd 147 MB

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