No idea how it's called, but I get this, when I move stuff around my desktop:
It kinda lets you quickly put items on different monitors (those are 3), but its super annoying.
Anyone knows what it is and how to get rid of it?
Respuesta1
Check if turning off these setting s under Make the mouse easier to use can work for you:
Turn off all Easy use of mouse features:
Respuesta2
That overlay looks a bit like the one from the Dell PremierColor Display Splitter application. I think you can turn it of in the advanced settings under "Display Splitter" here: 
Respuesta3
By following @Biswa suggestion, I moved some stuff around and checked the process log (what action is beeing called) and found out that It was MSI True Color settings:
