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"Steering Position" UI is delayed

Discussion in 'Troubleshooting: Bugs, Questions and Support' started by F/Slick, May 15, 2021.

  1. F/Slick

    F/Slick
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    The Steering Position UI is delayed by maybe half a second, which makes it essentially useless. This can be seen very easily if, at low car speed, you sway slightly the steering wheel from side to side in rythm: at a certain pace, the UI will be pointing alternatively to the opposite side than it should at that time (i.e. it will be turned to the right when your actual steering wheel is to the left, and viceversa).
    The problem does not arise with the Pedals Position UI, where no such delay is apparent.
     
  2. jakelooker

    jakelooker
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    Do you have hardware acceleration enabled for the UI? It's in the options menu somewhere.
     
  3. F/Slick

    F/Slick
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    Thank you for your answer. Unfortunately, I have not been able to locate anything of the sort in the menus...
     
  4. stenyak

    stenyak
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    Which steering wheel are you using?
    Please make sure you have chosen the "Wheel (direct)" filter type in your steering bindings. Otherwise the inputs will be smoothed out over time (which adds a delay).
     
  5. jakelooker

    jakelooker
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    I think it's under advanced options, unless it has been removed
     
  6. F/Slick

    F/Slick
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    Thank you, I've done this and hopefully will have a better general feeling from now on.
    But my problem was not referred to the steering itself, only to the IU. If I am in cockpit view, the on-screen wheel moves very much like my real G920; it is the small icon in the "Steering Position" IU which is delayed to the point that it aims to the opposite direction when you give it a quick back and forth motion from side to side.
    --- Post updated ---
    Indeed, advanced functions are now just for debug and performance statistics.
     
  7. stenyak

    stenyak
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    I can't think of anything then, since the pedals UI should be equally as laggy as the steering UI.
    Is the steering axis showing the same amount of delay in Options > Controls > Hardware?
     
  8. F/Slick

    F/Slick
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    I've made a short video (don't pay attention to the date, I just repurposed a previous upload): https://lbry.tv/@eCVT:7/Nordschleife_Corolla_GR_Sport+:2.
    I was hitting the throttle in time with the right-to-left motion of the wheel (in which the right half of the wheel that is visible is moving upwards) and releasing the throttle in rhythm with the left-to-right motion of the wheel (when the right half is moving downwards).
    By stopping the video at random intervals, you can verify that:
    1) The delay (which is not half a second as I had wrongly guessed but possibly a couple tenths) makes the small UI wheel aim at the opposite side than the on-screen wheel in this cockpit view.
    2) The ball in the angled diagram in Options > Controls (left half of the screen) seems to have a somehow similar delay... or maybe a little less?
    3) The delay in the pedal is clearly much less, if at all.
    I don't think there is any problem with my specific configuration (a plain G920) but more of a general issue. Now, you could very well say those two or three tenths are irrelevant. For the use I make of this UI, which is analysing my driving mistakes through a replay in chase view, it could mean the difference between the front wheels losing grip because of too much brake pressure with straight tires or, alternatively, because I had already started turning before releasing enough brake pressure (trail braking).
     
  9. Plymouth Superbird 1970

    Plymouth Superbird 1970
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    What's your frame rate
     
  10. F/Slick

    F/Slick
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    Thank you for your interest, but this is not a framerate issue. The on-screen wheel in cockpit view (which is obviously subjected to the same framerate of 30 fps) matches very closely the movements of my physical wheel; it is only the small UI wheel which is lagging behind.
     
  11. stenyak

    stenyak
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    Can you please assign your steering axis to throttle binding, and verify what happens?
    Conversely, please assign your throttle pedal axis to the steering binding, and describe what happens there too.
     
  12. F/Slick

    F/Slick
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    This is what happens with the throttle pedal assigned to steering binding:
    upload_2021-5-28_14-22-3.png
    upload_2021-5-28_14-24-51.png
    upload_2021-5-28_14-25-27.png
    upload_2021-5-28_14-27-7.png
    upload_2021-5-28_14-27-54.png
    You can see that the on-screen wheel starts moving from the second to the third frame but the UI moves only from the fourth to the fifth. The lag is therefore measurable in around one tenth of a second.
    The video is uploaded here: https://odysee.com/@eCVT:7/Nordschleife_Corolla_GR_Sport+:2.
    On the other hand, there is no appreciable lag with the steering axis assigned to throttle binding.
     
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