Well, we talked about this. 2 ms out of 16.6 ms is basically 12% so if that was the true cost then they wouldve been able to simply up the DRS resolution beyond the 1182p, target no? i think that 2ms number we saw was likely best case scenario. in my own testing on pc a few months ago, it fluctuated from game to game, engine to engine going up to 30% iirc.
remember, just because the cost of pssr is only 2ms, doesnt mean other effects that HAVE to render at 4k wont hit the GPU more.
regardless, its fine. looks almost as good as fidelity so it's doing its job. PSSR will indeed get better. DLSS took 2.5 years to get good and another year to get truly great so maybe by 2026, this thing will be better, but as someone who doesnt even like DLSS 4k performance, i was hoping for them to try and get to 4k pssr quality in every game like they do for tlou2.