I've now had time to test this out a fair bit on my own games and setting rather than listening to youtube folks, I see a difference in opinions here but an understandable one in my view two sides to a coin.
If say you have a 7900xtx AFMF isn't going to help you much outside the most demanding games and even then you might think the slight things that happen now and then would make you not wish to use it, understandable.
If your on something midrange and lets face it my 6800XT while still a good card is now midrange in 2024, however for me the gains are massive and the issues i've seen in testers im experiencing them less and not all of them.
Cyberpunk max settings with path tracing for me has gone from 40ish fps upto 90+ with dips when fast changes in viewpoint.
Alan wake 2 higher settings with path tracing similar performance, but at higher fps with path tracing off massive gains over 150fps at times.
Crysis Remaster i was getting 30fps ish max, now while the fps is wild depending on where i'm in the benchmark anything from 90fps upto 160fps
Assasins creed valhalla exact same settings 100fps now 260fps+
So sure it's not perfect sometimes the odd micro stutter and change in view dips and bounces back, so not good for multiplayer games in my view at all or anything that is anti cheat. Thing is it's very good and works well across all DX11 and 12 games i tested a fair few i have plenty to pick from, spent maybe 6 hours last night testing different things.
Where i feel i'm not getting an issue others had in terms of flickering when they are moving the camera, I do not and never have used motion blur i absolutely hate it, i see that as the key setting i don't use that maybe these other testers are.
So overall for me it's win win, 95% the way there, if they tweak this further and iron out these minor kinks it's a real gamechanger imho.
I've found the best way I use it is turn on RSR with AFMF and it's been very bug free for me, least not to say in the most demanding games to run made them extremely more playable, like most will focus on DXR games but it's still worth using on older games that don't have DXR where either too coding or general programming the boosts are huge.
So while I'm on a 144hz 1440p I'm hitting that way more often, and in many cases anyone that has some really high refresh rate like 360 or 240 they also will hit that more often.
I can see these different technologys taking over and making devs very lazy and at the same time others coming along to fit in with them.
I was unsure about how it would work or if only in certain cases it'd be any good or lots of bugs and annoyances or crashes in games due to it being new, but i've actually come away from it remarkebly more impressed than i expected going into it.