Yeah, I do think there's a big difference there. I just wonder if people can really notice a tiny drop in frame rate. I mean 1-5 frames seems insignificant to me.
1-4 frames; naw.
5 is noticeable. Even more so true, if the game's fast-paced (i.e. Doom, Need For Speed games, etc) and/or if the game's got low-FPS - i.e. stuck at 30FPS (Dark Souls PTD); or it performs poorly and lower than that.
I can really notice things, if the FPS is at 20 frames or below. That feels like slide-show city to me; even worse when in the single digits.
EDIT:
I'm pretty much blind to FPS until it gets under 30 and closer to 25. I've sat and stared at .gifs designed to illustrate the difference between 30/60/90 and I just can't see it. Or I can make out minor things like the debris in a dust cloud but I'm rarely concentrating on what the debris plumes look like when I'm actively playing and things are blowing up.
I know some people are very interested in FPS and I'll take them at their word that they can see something I can't. On the other hand, if not noticing it saves me some rage from my 45fps experience, why complain?
I do keep the Steam FPS overlay up just as a general indicator of "game health" and how well it's running on my system.
I'm fine w/ games running at 30FPS (my usual minimum), 40FPS, 50FPS, 60FPS or whatever - as long as it's 30FPS or above. 25-30FPS like I've had w/ Batman AK had is tolerable, though.
I wish more games would do more than just have 30FPS caps, 60 FPS caps, VSync On, VSync Off, or no cap period. I wish it was like MSI Afterburner - where I could also just type in the cap I want - and that'll do it for me. I usually try to pick a cap where it's most stable at.
I just like it to be stable and not roller-coasting up, down and round more so than anything. I do prefer 60 FPS - especially in faster-paced games; but I'm fine once it's stable if it's at least at 30FPS.
EDIT 2:
I never really have much of a problem with FPS in games. I like to blame it on playing shit like Ultima IX, Everquest, and Morrowind at like 15 fps and enjoying it. And yeah, I know, FirstPersonShooters and RPGs are different beasts, but I don't usually have problems playing a single player FirstPersonShooters until it's under 20ish.
Oh, man - I remember those days with Morrowind running at like 10-25 frames, at God knows when. Great game back in the days - but my God, those crazy framerates were "meh." Back with my good old GF2 MX400 card, hehe.