I had heard from some reviews, that this didn't work correctly with the PS4 system... I have had this now for roughly a month & it continues to work perfectly with the PS4 in one port, and the Xbox One X in another!!! For those who might have had issues with their PS4, the only thing I can say that maybe I have done differently, is that the PS4 cable that comes with the system isn't that great of one & I had purchased a higher end one roughly 6 months prior to buying this... maybe that's the cause, so I highly recommend if having that issue, but a high quality 4k HDMI cord hh replace the one that came with your PS4 system... as for the Xbox One X, that cord is already a higher end one & shouldn't need anything better. Before anyone asks... I'm using this with our 65 inch 4K Visio TV... not that that should make any difference tho. Hope this helps answer any concerns... good luck to you all with your switch! Oh... & the ONLY problem I have with this 4 port Switch... is the dang remote is way too cheap!