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Hirochi Sunburst brake lights cause stutter?

Discussion in 'Troubleshooting: Bugs, Questions and Support' started by CosmoFIN, Jan 30, 2015.

  1. CosmoFIN

    CosmoFIN
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    Joined:
    Jun 26, 2014
    Messages:
    15
    Hi,

    I noticed something strange when I was playing the experimental build. Whenever I was driving the Sunburst on Hirochi Raceway or East Coast USA, braking would make the game stutter/slow down. Driving in interior
    or exterior view doesn't make a difference. After some testing with different graphical settings I concluded that the Sunburst's brake lights were the source of the issue. Lowering the graphics removes the stutter, but a simple brake light effect shouldn't make the game slow down. No other car, vanilla or modded, could replicate the effect.

    Why are the brake lights on this one car so graphically demanding?
     
    #1 CosmoFIN, Jan 30, 2015
    Last edited: Jan 30, 2015
  2. randomshortguy

    randomshortguy
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    Joined:
    Aug 9, 2013
    Messages:
    1,562
    Either your game is having to load the "on" material for the brakelight every time or your GPU is on the edge of dropping below 60FPS and the addition of lights (that requires addition raycasting) puts it over the edge. Try clearing the cache (documents/BeamNG.drive/cache, delete the contents of this folder).
     
    #2 randomshortguy, Jan 30, 2015
  3. CosmoFIN

    CosmoFIN
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    Joined:
    Jun 26, 2014
    Messages:
    15
    Didn't work, but I noticed turning off VSync makes the game run much smoother and removes the stutter. Cheers! ;)
     
    #3 CosmoFIN, Jan 30, 2015
  4. Nadeox1

    Nadeox1
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    Spinning Cube
    BeamNG Team

    Joined:
    Aug 5, 2012
    Messages:
    14,697
    Vsync is just there to remove tearing that happens on certain situations when the ingame FPS doesn't match the monitor refreshing rate

    (imported from here)
    If you have it on, the game will limit the FPS to your refreshing rate (for example 60FPS) and if you go lower than 60FPS, instead of getting 59, 58, etc. It will jump directly to 30FPS.

    Since you had it on, when you brake, your FPS went below 60, and with Vsync ON your FPS jumped to 30FPS causing problems.
     
    #4 Nadeox1, Jan 30, 2015
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