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Thread: Where is the bottleneck?

  1. #1
    Superkart Pilot
    Join Date
    Aug 2015
    Posts
    144
    Platform
    PC

    Where is the bottleneck?

    Hi,

    when I start at LeMans with 50 cars my GTX1080 is alwasy in IDLE (GPU-Z) and the Windows Performance Monitor says that my CPU is just busy with around 80%. But I can't achieve 60FPS (V-SYNC). Only around 50FPS. Later, after the start when less cars are visible, I get 60FPS.

    I assume the bottleneck is the CPU, because reducing the total number of cars results also in higher FPS. Has anyone an idea why I can't see that in the Performance Monitor? Any other bottleneck?

    Gigabyte GTX1080G1 8GB
    i7 3770k @ 4.1 GHz
    Triple screen 3x1920x1200
    Last edited by Juhu_0815; 09-09-2017 at 14:03.
    i7 3770K@4.1GHz, Gigabyte GTX1080 G1 8GB, 3x1920x1200 triple screen, TM TS-PC Racer wheel, T3PA-PRO pedals, TH8A shifter, Windows 10 64Bit, 24GB RAM

  2. #2
    WMD Member Mad Al's Avatar
    Join Date
    Nov 2011
    Location
    Suffolk, England
    Posts
    1,665
    you could just try adding a parameter to tell the game to use 4 threads for the physics and see if that helps a little

    http://forum.projectcarsgame.com/sho...light=pthreads

    and when you say CPU load is 80% is that total or max on a single core.

    i7 4770K - ASUS Z87-A - 16Gig DDR3 (2x 8G Crucial Ballistix PC3-12800) - ZOTAC GTX1080Ti FE with EVGA Hybrid Cooler - iiiyama ProLite B2783QSU - Oculus Rift CV1 - Samsung 840 250G SSD , WD 320G Blue, WD 2T Black, OCZ 120G Vertex 2 SSD, LiteOn iHAS122 DVD-RW - Creative Audigy 4 - Creative 5.1 speaker system - Logitech G19 - MS HABU Gaming Mouse - Fanatec GT3 RS V2 + Clubsport pedals + shifter set - Windows 10 Home (64 bit).

    Second machine used for additional testing. i7-4790T - Asus H97-Plus - 16G DDR3 PC-12800 - Gigabyte GTX1060 - iiyama Prolite E2607WS - Oculus Rift CV1 - W10 Pro (64 bit) - xbox360 pad or Logitech DFP (all at stock speeds)

    HTPC - For testing of Steam Big Picture Mode (Hopefully from Media Portal 2) - i3-4130T - ASUS H81M-C - 8G DDR3 PC-10666 - Gigabyte GTX1050Ti - Windows 10 Home (64 bit) - xbox360 pad

  3. #3
    Superkart Pilot
    Join Date
    Aug 2015
    Posts
    144
    Platform
    PC
    Quote Originally Posted by Mad Al View Post
    you could just try adding a parameter to tell the game to use 4 threads for the physics and see if that helps a little

    http://forum.projectcarsgame.com/sho...light=pthreads

    and when you say CPU load is 80% is that total or max on a single core.
    I am using already "-dx11mt -pthreads 4" in the start options. I observed all cores and the maximum for each core was around 80%.
    i7 3770K@4.1GHz, Gigabyte GTX1080 G1 8GB, 3x1920x1200 triple screen, TM TS-PC Racer wheel, T3PA-PRO pedals, TH8A shifter, Windows 10 64Bit, 24GB RAM

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