The game needs to be allowed to finish its shader compiling before starting the game (which many apparently don't have the patience for), and then you need to be mindful of staying within the vram limit of your gpu. Not much more to it performance wise.
I'm well aware of the need to compile shaders, the question is, how long that process takes and what hardware is required to speed it up to an acceptable duration. I've seen comments on anywhere from 5 min to 2 hrs as far as how long it takes. Five, or even 10 min is fine, 30 min, or especially 2 hrs, is not.
And I've also seen some claim the performance is fine, most saying so are on very high end spec like you, some are on spec perhaps too low to believe, but then they usually don't say what their res or FPS are. So it's nearly impossible to tell by player feedback alone, as there's quite a range of claims, and many are vague.
Hence the reason a demo would be a nice tool for one to at least have a better idea what they are getting into BEFORE purchase, because as some have mentioned, the time it takes to compile shaders is counted on your 2 hour Steam limit to allow a full refund, and it's hard to know how long it would take given the huge variance of spec of those talking about it.
Lastly, I have gone from praising Sony for some of their PC ports like Days Gone and God of War 2018, to being very upset with some of their ported to PC releases. Uncharted Legacy of Thieves, another game that requires compiling shaders before playing, was a mess. It took me upwards 25 min to compile shaders, and a lot of the action scenes were still full of stutters. Worse yet, out of the blue sometimes it would need recompiling shaders on a subsequent launch, when it's only supposed to be required once. Now I know full well Iron Galaxy ported this collection, not Sony, but Sony signed off on it and it's their responsibility to make sure it was in acceptable condition prior to launch, and clearly it wasn't.
As far as I know the hardware that most affects shader compiling speed is the drive the game is installed on, and maybe the CPU and RAM. I have a Samsung 970 EVO I install any games that might be resource demanding on running at 3x speed, or just over 2200 Mb/s actual speed. My CPU is an i7-8700K, and my RAM is 2x8GB Corsair Vengeance LPX DDR4 3200 speed at CAS 16.