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Fast Sync SLI not working with lastest 387.92 driver

Discussion in 'Videocards - NVIDIA GeForce Drivers Section' started by Berke53, Oct 16, 2017.

  1. Berke53

    Berke53 Active Member

    Messages:
    64
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    GPU:
    2x ASUS GTX 1080 Strix OC
    Fast sync for SLI users was introduced in the latest driver version 387.92 however Fast sync is not working on my setup. It acts as traditional Vsync.
    Framerate is locked to my monitors refresh rate and i'm positive I don't have a fps cap set up.
    When i switch to a single card it works fine.

    Any ideas? Thank you

    GTX1080 SLI using official Nvidia HB bridge
    ASUS ROG 348Q monitor @100hz Gsync enabled

    Nvidiainspecor flags:
    https://imgur.com/a/F6MMb
     
  2. HeavyHemi

    HeavyHemi Ancient Guru

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    GPU:
    GTX1080Ti

    Erm...why are you setting that globally on the Desktop?
     
  3. venturi

    venturi Master Guru

    Messages:
    277
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    GPU:
    4x Titan V 32gb CEO
    setting Fast in v synch crashes several games that actually use the real SLI AFR/AFR2 in profiles where the compatibility bits ends in 0005, any SLI profiles that force only 1 GPU obviously aren't affected. of course those aren't really SLI so it doesn't count

    but the point is, the FAST synch doesn't really work with titles using 2+ GPU.

    While some folks just experience FAST not working, others have full crash

    Set globally
     
  4. Berke53

    Berke53 Active Member

    Messages:
    64
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    GPU:
    2x ASUS GTX 1080 Strix OC
    I set it up globally just to showcase the inspector flags i use to get it running and test out some games. Ofc i did not have any intention to leave it on globally..
     

  5. Berke53

    Berke53 Active Member

    Messages:
    64
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    13
    GPU:
    2x ASUS GTX 1080 Strix OC
    If Fast Sync doesn't really work with SLI games then why did Nvidia released a driver with 'fast Sync support for SLI configurations' in the release notes? lol
     
  6. venturi

    venturi Master Guru

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    GPU:
    4x Titan V 32gb CEO
    well, its included but it only half baked ;)
     

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