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Samsung G9 Odyssey / ACC display issue

Discussion in 'ACC Hardware Discussions' started by jonhart.hotlap, Mar 5, 2021.

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Page 1 of 2
  1. jonhart.hotlap

    jonhart.hotlap Rookie

    Hey all,

    Below you will find 4 screenshots from ACC, as displayed on my late 2020 Samsung 49" G9 Odyssey.

    Res is 5120 x 1440 px, aspect 32:9.

    ACC 1.75 runs perfectly but when actually racing, a single white vertical line appears where, I assume, would equate to a bezel. The offset in ACC view settings is set to zero (see images).

    A couple of points to note:

    1) This only displays when in Drive mode.
    2) The pit view shows a clear, clean 1px vertical line.
    3) When you start moving, you will see a flare around the line in the top part of the screen. It varies a tiny bit, but only when moving.
    4) The main menu does not show this line, only in Drive mode.
    5) View settings screen also shows this line.

    This happens on all ACC tracks. There is no issue with any AC tracks.

    Hardware:

    Intel i7-9700KF @ 3.6.
    16GB RAM
    Nvidia GeForce RTX 2060 Super

    OS: W10 Version 20H2

    Controls: Fanatec Pedals V3, ClubSport Base 2.5, BMW Gt3 wheel

    Any thoughts?

    Cheers,

    Jon.
     

    Attached Files:

    Last edited: Mar 5, 2021
    jonhart.hotlap, Mar 5, 2021
    #1
    nirwana42 likes this.

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  2. ohjeah

    ohjeah Hardcore Simmer

    You can adjust resolution scale to get rid of the white line. Just find a value that works. Post processing to low helps with the resolution scale but doesn't completely fix it..
     
    ohjeah, Mar 5, 2021
    #2
  3. jonhart.hotlap

    jonhart.hotlap Rookie

    Thank you for your reply.

    I moved the resolution to 120% and that fixed the line issue, as well as dropping post processing to low.

    Whilst there is no line now visible, you can just make out a slight contrast change between the virtual left and right screen areas, but only when moving. This is will probably be a software fix soon enough.

    Thank you for your kind help.

    Jon :)
     
    jonhart.hotlap, Mar 5, 2021
    #3
  4. Andrew_WOT

    Andrew_WOT Alien

    Another option for wide screen that works just as well as enabling Triple Screen is to set Projection Correction to 1.0 in View option, and disable Triple Screen. No white bezels and mirrors are not stretched anymore, just set the right FOV.
     
    Last edited: Mar 5, 2021
    Andrew_WOT, Mar 5, 2021
    #4
  5. jonhart.hotlap

    jonhart.hotlap Rookie

    Thanks for that option. It definitely dials out the slight contrast change so its now totally one screen.

    Cheers for your assistance.

    Jon :)
     
    jonhart.hotlap, Mar 5, 2021
    #5
    kro likes this.
  6. FlakNine

    FlakNine Gamer

    Agreed, this is the way.

    That Projection Correction option does cause your virtual mirror to get chopped off the top of the screen, however a recent update allows you to modify the vertical position of the virtual mirror, so solves that problem.
     
    Last edited: Mar 5, 2021
    FlakNine, Mar 5, 2021
    #6
  7. Andrew_WOT

    Andrew_WOT Alien

    Also found out today that Triple Screen setup has quite negative performance impact comparing to Projection Correction, not to mention introduces that weird contrast shift on virtual screens transitions.
    BTW, white lines can be fixed by increasing Resolution Scale, 101% worked for me.
     
    Andrew_WOT, Mar 6, 2021
    #7
  8. ohjeah

    ohjeah Hardcore Simmer

    Decreasing works too. And of course helps a bit with the performance.
     
    ohjeah, Mar 6, 2021
    #8
  9. Andrew_WOT

    Andrew_WOT Alien

    Word of caution of Projection Correction!
    It degrades image quality, looks like it's trying to stretch lower res image and you can see as things get much blurrier at mid/long distances.
    No kidding, was scratching my head why ACC started looking as if I run lower Resolution Scale, turned out it's this guy. :mad:
     
    Andrew_WOT, Mar 7, 2021
    #9
  10. pankykapus

    pankykapus KS Dev Team Staff Member KS Dev Team

    It distorts the image, as it applies a sphere distortion, which is why the performance impact cannot be compared 1:1.

    50% projection correction requires around 10% more res scale, and 100% requires 15-20% more to offset the clarity loss in the centre.
    The curve of the G9 would justify the correction being maxed out, but it depends on what resolution upscaling you can afford. On the older gen Samsung ultrawide on my home rig I run 50% and 110 res scale.

    I would still recommend projection correction to be used on curved ultrawide monitors, as that's what it's there for. Triple projection has an approximately 20-25% performance impact, I don't think the extra res scale is as taxing, depending on GPU.
     
    pankykapus, Mar 13, 2021
    #10
    kro, JanR, nirwana42 and 3 others like this.
  11. georgi iovchev

    georgi iovchev Racer

    I also use the older version of samsung 39:2 (chg9) and find that 110% resolution scale was not enough. For me it was at least 130%, and the fps loss was big. Experimented a lot with the projection correction and resolution scale, and at the end returned to the triple screen option with low postprocessing.
     
    georgi iovchev, Mar 13, 2021
    #11
  12. Andrew_WOT

    Andrew_WOT Alien

    Wow, thanks a lot Gergő, absolutely invaluable information.
    Any chance to have it captured in your wonderful "Newcomer's Guide" before it gets lost?
    Thanks again.
     
    Andrew_WOT, Mar 13, 2021
    #12
    nirwana42 likes this.
  13. Hankmadison

    Hankmadison Gamer

    Is there an actual newcomer's guide to setting up the G9 in ACC? And if so, where would I find it? Thanks.

    BTW @Andrew_WOT thanks again for your G9 settings. Loving them!
     
    Hankmadison, Dec 2, 2021
    #13
  14. RSR2KX

    RSR2KX Racer

    Hi,

    is there a link to read about @Andrew_WOT settings for the G9, would be much apprecitaed.

    cheers
     
    RSR2KX, Dec 4, 2021
    #14
  15. Hankmadison

    Hankmadison Gamer

    Hankmadison, Dec 8, 2021
    #15
    RSR2KX likes this.
  16. Rebel_488

    Rebel_488 Racer

    @Andrew_WOT any idea why your epic vr engine changes my view settings? I’m not complaining as I prefer it to mine but I can’t see any reason for it, not fov but height, dash etc is different, also why can’t I enable hdr in game? Nvidia, windows and g9 all enabled? Cheers if u can assist lol
     
    Rebel_488, Feb 26, 2022
    #16
  17. Rebel_488

    Rebel_488 Racer

    I also don’t seem to be able to change the projection curve from what u have set but none of this seems to be in the file? I typed engine rather than graphics setting file by mistake
     
    Rebel_488, Feb 27, 2022
    #17
  18. Rebel_488

    Rebel_488 Racer

    @pankykapus do I have any idea about this? When I set up my fov with dlss on its one way and then if I change to fsr it’s a different more zoomed out view. Projection correction also doesn’t seem to make a difference when I change it. Also dlss equals 80 plus fps (80 sharpness/quality mode) fsr (res 101, sharpness 20) equals 55-60 fps. All tests on single player hotlap mode.
     
    Rebel_488, Mar 6, 2022
    #18
    Hankmadison likes this.
  19. Rebel_488

    Rebel_488 Racer

    To be clear when using fsr, the projection curve changes dont seem to affect anything? And so the view changes from standard (or with dlss), not fov as such but it’s more zoomed out than what I have set without fsr and the view/track almost feels narrower like a tunnel vision etc, sorry I’m describing this terribly. Hope it makes sense
     
    Rebel_488, Mar 6, 2022
    #19
    Hankmadison likes this.
  20. Hankmadison

    Hankmadison Gamer

    I would love to see a guide for setting up G9 Ultrawide with ACC. Seems there is quite a bit of conflicting info regarding Projection Correction vs Triple Screen Settings and some of the issues mentioned above.
     
    Hankmadison, Mar 22, 2022
    #20
    Prometheus 3 likes this.
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