Also, my God - look at the number of NPC's in Hitman. No wonder this game's taking crazy hits in performance like it is. I'm sure when it has to cast dynamically all of these shadows, draw more textures, and whatnot - there goes performance out the window. We're not even taking into account if any of these NPC's have AI - and if many or all of them do, this is ACU all over again. Going to need MORE raw power just to handle all these computations, especially if it's processing lots of NPC's; even more so if there's going to be AI tied to the NPC's. Take also into account the share size of this game-level, which is epic - yep, more performance to go out the window.
It doesn't even say what AA settings the AA is that the person is using, from the in-game menu. FXAA is low-end AA these days, but I don't think it's that. Could they be using more expensive AA in-game here? Maybe MSAA? TXAA? SMAA? Or what? Those settings can be brutal, if you ain't got the VRAM to handle it. There doesn't look to be many graphics settings here exposed in the in-game menus, either - so who knows what the hell they have hidden settings (likely in an INI file, like old Hitman games did) when it's cranked up. Likely, they probably got other unexposed settings cranked up all the damn way - when they should expose the settings to us so we can run options that might make the game run worth a damn. Dude adjusts a lot of it up to Ultra - and it turns, more or less, into a console experience.
PS4 has 8GB shared DDR5 RAM. Dev's like Avalanche have warned us that more VRAM on PC would be necessary - b/c they just dump assets whenever + wherever in the shared RAM pool; so with shared RAM on consoles (for both regular RAM + video assets), here come the problems for us PC gamers. PC gamers have separate RAM dedicated to just handling the video. Those dev's who like to push graphics to the max - and Hitman games usually have top-shelf quality when they come out, every single damn time - are going to be brutal on newer games for us.