I get a game that feels like 60 FPS and looks like 120 FPS...Also haven't seen any apparent problems with UI elements.
I'd still prefer let's say 90 real FPS to AFMF 120 FPS.
if I had to choose between 60 native and 120 generated I would pick the second every single time (provided it’s implemented properly without atrocious artifacts). But even more likely is that I would drip the settings until I can reach, as you mentioned, 90-100-ish native for that responsiveness benefit. But that isn’t always an option, of course.
Reading this thread is torture, so It's nice so see that you guys get it.
From my testing it looks bad if you get above your freesync range, and it doesn't respect FRTC.
This means you have to limit your real FPS to half of your max refresh to stay in range.
I underclocked my GPU and tested at a few levels.
AFMF shines in situations where you get 60-70 FPS, and you have a 120-144hz screen.
At lower FPS it doesn't work as well, and at higher FPS it isn't needed.
On my monitor and IMO:
72 FPS is choppy
72 FPS+AFMF is smooth, but fast mouse movement=huge FPS dips(xbox controller OK)
90 FPS is almost smooth, and better overall with no FPS dips
90 FPS+AFMF is choppy(above my freesync range)
If (maxFPS / RefreshRate)<=0.5 then AFMF = True
Many people here probably don't need AFMF, but for people that are only getting 60-70 fps, this can give them a nicer experience.
If you get a new GPU every 6 months you don't need this - good for you!
This should be a blessing to console owners.
If I was playing games with a controller limited to 60 FPS, this would be great.