The model of i7 is irrelevant, regardless it is using some form of integrated graphics. Most likely less powerful than usual being a mobile processor. I cannot see Pubg being any bit of playable without some form of dedicated GPU with how horribly optimized it is. BF4 possibly being playable but I'm doubtful in a full lobby, and Rainbow Six: Siege being the most playable. And by most playable I mean 20-30 FPS. And that's at 720P. I really would not recommend in any circumstance Intel on-board graphics for anything other than YouTube. Hell, I personally am against gaming on a laptop in general due to how quickly hardware (Mainly graphics cards) Improve, and the lack of upgrade path with a laptop. It will cost you more money in the grand scheme.