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I initially suspected we were just looking at simple TAA on PS5, but the options menu indicates that FSR2 is actually in use here - AMD's popular temporal upsampling and anti-aliasing solution. The weird thing is that every shot on both PS4 Pro and PS5 seems to resolve to a full 4K resolution, meaning the FSR2 is providing anti-aliasing coverage without a performance benefit, as the game is already running at native resolution. There's a possibility dynamic res is in place, but I didn't spot any evidence of it in my testing. It's unusual for sure, but that seems to be the situation. So, in effect, developer Double Eleven is using FSR2 as a temporal super-sampler - and the benefits are obvious. Xbox consoles retain the 2x MSAA of Xbox 360 and while it's still impressive on One X and Series X in particular, PlayStation just looks smoother and cleaner.