I played Ps4 on my TV with my girlfriend today. The game GTA V on the TV ran smoothly but didn't do anything on my home?
Maybe it's your internet
Poor management?
Online or offline?
Maybe your girlfriend's screen has only HD instead of Full HD?
No, it even has 4k
No actually not
Test out with a friend. There are televisions that still produce an intermediate image and turn 30fps into 60fps. Maybe your girlfriend's can