Gosh, I’m almost reluctant to post. I’m not a dev, and even when devs say stuff people don’t believe them if they’ve already made up their minds, so… well here goes anyway.
First, in case you ever do want to check motec logs, DAMPlugin is all you need. The sharedmemorymap plugin isn’t used at all, which the reddit OP seems unaware of. Take that as you will.
Comparing telemetry traces by eye, especially something noisy like FFB or suspension movement, is actually pretty tricky. Add in the fact that the underlying source may be at a higher rate and really your only half sensible approach is FFT analysis - but across a higher number of runs to at least reduce variation in driving line etc. In this case the FFB output is shown at 100Hz, but the game sends FFB at 400Hz. The plugin can be configured to log it at that rate. If you imagine having two noisy sources, then you just take every 4th value from each one... it's not much good for comparison.
The game runs its internal physics loop at 2400Hz, without fail. There is no link to graphics framerate. (tiny history: rF1 output its telemetry at 90Hz or the current frame rate,
whichever was lower. I assumed that reflected the internal physics running slower (4 loops per frame, 360Hz internal). rF2 always outputs telemetry at 100Hz, and will go into slow motion if the CPU can't keep up (unfortunately for online play). LMU is the same) So every 6 physics loops the FFB is output, hence the 400Hz output. Physics doesn't skip, therefore FFB doesn't skip.
I've said it elsewhere, and people tend to take this the wrong way, but
placebo is powerful. Thing is you talk about placebo and people get all defensive, "oh, so you think it's all in my head huh? Well I can
feel it!" .. and, well, yeah, that's the concept, but it's a known phenomenon (it's literally the most consistently effective drug known to science; people get positive benefits from placebo
even when they know it's placebo! It's nuts!). Nothing to be ashamed of, just have to be aware of it and try to do everything possible to account for it when testing stuff. Changing a setting and then testing: well guess what, you know what setting you just changed, and you will naturally be biased toward anything that suggests the expected effect of that setting. (sim racers adjusting car setups should be well aware of this potential; anyone who's made the mistake of thinking they assigned a setup and realising after 15 minutes they've been running on default,
knows about it)
And unfortunately: good luck trying to blind test if you're comparing VR to screens. If you don't know which you're using, you're not in a fit state to test anything
You can pretty much lump framerates into the same group, because chances are you can see the difference. Maybe if you have someone change the settings and you're wearing goggles smeared with oil so you can't spot framerate/sync differences but can drive around a track well enough to feel the FFB, and you're out of the room when they "randomly" make the settings change, and preferably a third person is leading you in and out of the room so the settings-changer can't accidentally give anything away, and you run
tens of tests and check your accuracy... then yeah, maybe.
Finally: there's a tendency for people to show motec graphs as proof of things, without always understanding the limitations of what they're showing (either what the data itself shows, what it means in the context of a game, the limitations of the data format (game or Motec), or simply how much is relevant to what a person can discern). And people who haven't used Motec see a graph, see something they're supposed to see, and start to wonder. And I get it, but it really shouldn't be used to draw any conclusions until a lot more investigating is done. Surprisingly (ironic) when you start drilling for details very few people are willing to do the work.
Anyway, I digress. Suffice to say I think it's very unlikely FFB changes with framerate. Can probably get a dev here to say the same, based on the code they can literally see, but... I'd refer you to the first lines of this post. The reddit OP will likely be unconvinced.
