Soldato
Just been trying out remote play on my Z3.
Had to pair it to a controller first, and I'm sure it said that once I disconnect, it would go back to working with the PS4 - it didn't - had to pair it manually back to the PS4 after.
Had a quick run on a daily heroic on Destiny - Thank God PyscoSonny turned up is all I have to say lol! - I was being pwned bigtime!.
Whilst it's not unplayable - there's some lag obviously which makes FPS difficult to play. The other main problem was the 'tiny' screen - 5" at 1080p is quite hard to see from a foot and a half away!
Oh well, whilst not perfect it does work and should be suitable for some of the slower games but defo not for ones which require quick response times.
Have you tried the adapter for it so that you can mount the phone above the DS4?