if a system is set up correctly the user should not be able to tell the difference between 24 and 34 frames. If you can, you are either a D3D game frame junkie (no offense to anyone because I did it too years ago) and do not have the ability to turn off the frame monitor (which robs the sim of at least 3 frames of performance) or something in the system is not running right or is being pushed too hard.
24fps is jerky in any game, 34 is playable and over 60fps you start to see smooth motion. As long as people keep spreading the rhetoric that the human eye can't see more than 28 or so FPS, people's brain's are infected with misinformation.
FPS in PC games doesn't equate to FPS in cinematics, the way the images ar displayed is totally different. You don't get smooth motion on PC Games until the FPS is relatively high. Individuals detect FPS much differently, but most people would easily detect FPS differences up to 60 or 80 fps. Military tests with fighter pilots showed the human eye can detect incredibly high FPS, which is important (life or death) in fast motion scenes.
To test this in MSFS, go to outside view and pan around at 25fps, then kill the clouds or settings until you are getting 60-80fps and see the difference for yourself. It's not rocket science, it's a simple matter of perception. To me, the high fps adds a new dimension of "as real as it gets", but the importance one places on this is completely subjective. If low fps doesn't bother you, well and good.
I don't run the FPS counter, however, when FPS drops below an acceptable level (for me), I'll turn it on to get a diagnostic reading just so that I can measure the effects of any changes I make trying to correct the problem.
In my combat sim, I aspired to build my system up to the point where I could run "Perfect" settings which makes the oceans and forest look fantastic compared to lesser settings. This process culminated in the purchase of my latest video card. Now I'm able to run perfect settings and heavy scenery in my combat sim and it gives me a grand total average FPS of............ 24fps............. which is barely playable in an online combat sim. It looks bloody terrible at 24fps and trying to dogfight and hit ground targets at that setting is very difficult. As soon as I switch the settings back to Excellent (this drops some shader support), the FPS doubles and I'm back to my 70fps average which is very smooth and realistic, except now the scenery lacks that WOW! factor, but hey, at least now I can survive the battle!
This is a never ending saga. We are fed software and hardware that constantly tries to outdo one another in the great FPS game.
I've been at this for 17 years trying to make it all work, so I know what I'm talking about even if I don't have the formal qualifications (which I very much respect) to qualify my "opinions".
So, we come to the present situation that unless you are prepared to spend the annual income of several African nations on your desktop PC, you have absolutely no hope of any satisfaction. Even if your finances are seemingly limitless as far as PC hardware is concerned, you may not be much better off anyway!
In order to mask all this frustration, we tell ourselves (and anyone who will listen) that this is all just fine, normal and fantastic! But you know what? It's not. It's a suck in. Millions of manhours are wasted every day trying to find a solution while we waddle in mediocrity with open wallet. The saga continues every year, after each software release, OS release and so on and so on.
On that note, I'm wishing all my talented and dedicated peers here at SimV a very Merry Christmas and Happy New Year (or your local cultural equivalent) and I hope we can all enjoy our hobby with as few problems as is possible in the future.