Weird overlay icons in all Unity editor windows

I am getting weird overlay icons in all Unity 5.x version I have installed. See attached images. Anyone know what it it is and how to get rid of it?

I have Windows 10 PC with Unity 5.3.4f1, 5.4.0f4, and 5.50b4 was installed 2 days ago. None of my other software has that.

It must have started somewhere within last week, since that approximately how long I haven't opened it. The only changes are Unity Beta installed, some Windows updates and Nvidia driver update.

 

I got the same problem today. But thanks to your very last comment I found the culprit.
Nvidia update last night! Try uninstalling Nvidia Experience, fixed it for me.

 

Yes, it was Nvidia Experience. Thanks!

 

NVidia Experience can be a very useful app if you know how and when to use it. Instead of uninstalling it, you could either open it, go to settings and deactivate Share option completely or press Alt + Z and disable the Instant Replay and the Mic On settings separately. The icons will immediately disappear.
This way you'll keep your drivers up to date and all the other game settings the application has to offer.
Thank you.