A bit confused on why FSR 2.1 looks so bad. This might be the worst I've ever seen it look in any game on this site. Quality looks as bad as Performance does in any other game, it's just a smeary mess. It's even worse than FXAA. I actually have a hard time believing FSR 2.1 has any sort of sharpening filter applied to it in its current state. It's also not selectable when you choose FSR, so you can't adjust the sharpening for it, however I noticed in the video that you can for DLSS. I don't know what they did to make it so bad, so I'll assume that they didn't implement FSR 2.1 correctly.
As for DLSS 3.0 Frame Generation... I... kind of have an issue calling the FPS it puts out frames per second. Sure, it throws out frames, but they're... only kind of real? If I understand frame generation correctly, in simple terms they're predictions of what the frames are going to be. I just don't see the usefulness of simply jamming predictive frames during gameplay besides saying "Look, higher number better!" in benchmarks. Its a technology that would actually get worse the lower base FPS you have, because there won't be enough good frames for the predictive frames to be obscured. I expect that this may actually make the experience worse for people actually need to use DLSS. But hey, maybe I'm wrong and it's amazing. I don't expect I'll know for another few years when the next-gen GPU's come out.