Review on Dingsun 5 Port HDMI Selector With Remote And PIP Function - 4K@30Hz, 3D Compatible For Fire Stick, Roku, PS3/4, Xbox, Apple TV DVD - Auto/Not Auto Function - HDMI Switcher (5 In 1 Out) by Shaun Robinson

I don't usually do reviews, but I didn't see any others commenting on one annoying feature -- maybe it is just my unit. The switch works fine (for a week -- hope it continues to work). I have four inputs & switching works as expected. As others have commented, the PiP isn't great, but does work. We've been annoyed by occasional drop outs (black screen for several seconds). Since we mostly watch streams or recorded shows we haven't missed any content, but it is annoying. I thought it might be related to the DVR, but now I've seen the same problem on a stream, so it is definitely a problem with the switch.