https://www.polygon.com/2018/4/12/17227946/god-of-war-ps4-pro-60fps-4k-1080p

God of War is a stunning technical achievement for its single-take presentation alone. Less impressive, however, is the game’s 4K rendering mode on the PlayStation 4 Pro. It doesn’t seem able to maintain a solid 30 frames per second, and in an action game like this, that just doesn’t get the job done.

PS4 Pro users have two different rendering options for God of War: “Favor Resolution,” which runs the game at 4K resolution using checkerboard rendering, and “Favor Performance,” which displays the game at 1080p resolution. If you aren’t playing on a 4K television, the Resolution mode will use supersampling to run the game with increased detail on your lower-resolution display. The Resolution mode targets a frame rate of 30 fps, while the Performance mode unlocks the frame rate with a cap of 60 fps. (The graphics mode option is grayed out if you’re not using a PS4 Pro.)