well most of the time, however, sometimes when I switch devices the screen gets fuzzy and it only goes away by turning everything off and reconnecting the cables

So you are watching a movie and suddenly - boom - blank screen.

An odd green pixelated screen is all I see

Screen flickering, static and audio popping on and off.

When I turn something on that's plugged into it, the screen starts flickering with static

Does not work after 2 months, switching between flickering gray screens I would like to return this product but off course it is too late

It just causes snow and fuzzy screen, cuts in and out

My low rating is because in my opinion the manufacturer should include an appropriate A/C adapter with this, since it will not function as advertised with several HDMI compatible devices that do not output enough power to drive it passively.