You won't notice anything if the temporal AA is implemented correctly. No added latency, no ghosting, and even no shimering. The problem is it's not simple than turning a switch to do good TAA or TAAU.to the shift of everything being temporal. Faster paced games now can give me motion sickness.
FSR being spatial, whilst not as good IQ, at least gave an option that wasn't temporal based. Now it seems thats coming to an end. RIP.
AI can do very good, but this is not the same thing as DLSS. In DLSS, the upscaled pixel come from previous frame and the neural network is only used to select witch pixel to reuse. There is a limit on what you can do in real time.Well I don't know about the upscaling that GPU makers use, but Adobe has an AI upscaling technology called super-resolution and I can attest as a photographer, it definitely increases IQ beyond the original. The results can be staggeringly good. It also corrects a lot of lens aberrations like distortion and can greatly enhamnce very fine detail. I have a 42MP camera and using super-resolution which upscales by 2x and then down scaling back to original resoltuion gives me files that are far more detailed than even the newer version of my camera that has 61MP.
I honestly could not believe what I was seeing. I will be reprocessing some of better landscape photos now.
So it might make you laugh now I guarantee it is possible.
Another example is noisy images. Topaz Denoise AI can actually restore features lost to noise because the AI knows what should be there.
AI image processing is already doing amazing things and it's it's still early days.
Now one way you can slightly improve IQ is to upscale an image (no AI) do some image processing and then resample back to native resolution. So I expect they mean if you ran FSR 2.0 without down-scaling, the resultant image could look better than native, but not by much.
The added details come from slight difference between frame (the renderer will shift the grid slightly each frame to resolve details and it will push further away the mipmap level so texture get more details than they would the backend resolution. It's clever and that do the job very well. If you don't have to use raw power to do something, don't. It's how to do effective real time rendering.
Will you ever say anything good about AMD's GPUs and software? BTW FSR allows you to play AAA Games at 1080P with Pascal GPUs. It is interesting that DLSS's expansion directly came right after FSR 1.0 launch. So you can actually thank AMD for your sentiment.
Don't hold your breath ! Some people there really have a shills. Let them be, they don't hurt anyone really.