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ACC general support Note about silent updates Startup troubleshooting ACC savegame reports

Physics and FF frequency

Discussion in 'Chit Chat Room' started by jajp999, Mar 31, 2016.

Page 1 of 4
  1. jajp999

    jajp999 Gamer

    Out of interest what rate do the physics engine and FF updates run at in AC

    Are either linked with frame rate??

    Thanks in advance if anyone knows
     
    jajp999, Mar 31, 2016
    #1

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  2. Eero

    Eero Hardcore Simmer

    333 hz IIRC
     
    Eero, Mar 31, 2016
    #2
  3. F430_458_F12

    F430_458_F12 Alien

    I don't think they're linked with FPS.
     
    F430_458_F12, Mar 31, 2016
    #3
  4. stefanoCasillo

    stefanoCasillo Alien

    Physics engine is running at 333Hz. FF is running with the physics but it's "jumping" steps as set by the parameter: FF_SKIP_STEPS in assetto_corsa.ini , the default is 1 which halves the frequency of the physics so at ~150Hz .
     
    stefanoCasillo, Mar 31, 2016
    #4
    WallyM, Glaurung, Cote Dazur and 2 others like this.
  5. F430_458_F12

    F430_458_F12 Alien

    I turned the 1 to 0 to see if I could eliminate any skipping, should I revert this back to 1 for AC 1.5?
     
    F430_458_F12, Mar 31, 2016
    #5
  6. ouvert

    ouvert Alien

    you did it now or you are already playing with it set ot 0? is it improvement or cant tell?
     
    ouvert, Mar 31, 2016
    #6
  7. F430_458_F12

    F430_458_F12 Alien

    I've been using the FFB at 0 for a while, was just wondering if I should revert it since some FFB and physics improvements are coming in the next update.
     
    F430_458_F12, Mar 31, 2016
    #7
  8. stefanoCasillo

    stefanoCasillo Alien

    0 is fine (it's actually better) but not every wheel can handle it that is why we default to 1, it looks like a good safe frequency.
     
    stefanoCasillo, Mar 31, 2016
    #8
    Phil64, Glaurung, Cote Dazur and 2 others like this.
  9. F430_458_F12

    F430_458_F12 Alien

    Yeah, I set it to 0 after I purchased a Thrustmaster T300RS this December...not sure what you're experience is with that wheel, or if 0 is healthy for that platform, but I'll revert it to see if all is well :)
     
    F430_458_F12, Mar 31, 2016
    #9
  10. ouvert

    ouvert Alien

    T300RS used to be 125Hz update rate (8ms delay) wheel ... I think it was updated to 500 though
    My crappy DFGT which has 500Hz (2 ms delay) rate is running 500Hz refresh rate (and 360Hz) just fine .. I`ll try to set the skipping to 0 .. thanx
     
    Last edited: Mar 31, 2016
    ouvert, Mar 31, 2016
    #10
  11. kofotsjanne

    kofotsjanne Alien

    Is there a way to test this, something like those mouse tests out there?
     
    kofotsjanne, Mar 31, 2016
    #11
  12. ouvert

    ouvert Alien

    yep T500RS was updated to 500Hz in september 2015 (fw V43) so if somebody was trying it and it didn`t work for him, now it could be fine :)

    EDIT: oh sry I mixed up T500 and T300 .. T500 was updated .. I don`t know about T300

    @kofotsjanne: got no idea ... but you have DFGT right? so you should be able to run high rate fine ...
     
    Last edited: Mar 31, 2016
    ouvert, Mar 31, 2016
    #12
  13. F430_458_F12

    F430_458_F12 Alien

    So what's the T300?
     
    F430_458_F12, Mar 31, 2016
    #13
  14. ouvert

    ouvert Alien

    sry I mixed T500 and T300 ... don`t know about T300RS ... no update was done so if it was running 125Hz like T500 from the start it is probably still 125Hz ..
     
    Last edited: Mar 31, 2016
    ouvert, Mar 31, 2016
    #14
  15. rubenforos

    rubenforos Gamer

    for T500RS is better change the parameter from 1 to 0?
     
    rubenforos, Mar 31, 2016
    #15
  16. mtlclutch

    mtlclutch Gamer

    anyone know what the g27 max update rate is?
    Also want to thank LORD KUNOS for often replying to our silly questions :]
    Never experienced such great connection with a dev before! I will now and forever throw money at my screen
     
    mtlclutch, Mar 31, 2016
    #16
    ForcefulOdin36, Fat-Alfie, deni80s and 3 others like this.
  17. ouvert

    ouvert Alien

    G27 has 500Hz rate ... just like DFGT and G25 ...
     
    ouvert, Mar 31, 2016
    #17
    deni80s and Glaurung like this.
  18. F430_458_F12

    F430_458_F12 Alien

    Yes! Means the wheel doesn't delay any forces I believe...samples them all at the same rate as delivered by the physics.
     
    F430_458_F12, Mar 31, 2016
    #18
    rubenforos likes this.
  19. OliW

    OliW Racer

    What about the accuforce pro? What settings plz?
     
    OliW, Mar 31, 2016
    #19
  20. F430_458_F12

    F430_458_F12 Alien

    I checked, couldn't find the wheel's update rates, but I imagine they're over 200, it's sim-grade wheel. You should probably be able to set the FFB skip steps to 0 and have 1:1 FFB.
     
    F430_458_F12, Mar 31, 2016
    #20
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