1. Do you need support for Assetto Corsa Competizione? Please use the proper forum below and ALWAYS zip and attach the WHOLE "Logs" folder in your c:\users\*youruser*\AppData\Local\AC2\Saved. The "AppData" folder is hidden by default, check "Hidden items" in your Windows view properties. If you report a crash, ALWAYS zip and attach the WHOLE "Crashes" folder in the same directory.
  2. FOR ASSETTO CORSA COMPETIZIONE: If you report issues with saved games, please always zip and attach your entire User/Documents/Assetto Corsa Competizione/Savegame folder!
  3. If your game executable is missing, please add your entire Steam directory to the exceptions in your antivirus software, then run a Steam integrity check or reinstall the game altogether.

Used Nvidia Inspector to enable Resizable BAR for ACC and it works

Discussion in 'ACC Hardware Discussions' started by buddhatree, Apr 17, 2021.

  1. buddhatree

    buddhatree Racer

    Using Nvidia Inspector you can enable resizable BAR in any game instead of waiting for Nvidia to add it to the whitelist so I tried it with ACC and works very well. The FPS increase is small, maybe 5 fps, but it's the smoothness that makes it nice. No stutter or pauses using epic textures, just a really really smooth game.

    Of course you have to have a motherboard, video card, and drivers that support resizable BAR.

    Here's the instructions if you want to try it: https://wccftech.com/heres-how-you-...bar-support-in-any-game-via-nvidia-inspector/
    PostBox981 and chksix like this.

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  3. Thomas Fun

    Thomas Fun Racer

    Thank you for the suggestion.

    I tested this on a single hotlap and it had a negative effect for me. As you can see in the frame graph, it is constantly worse. Disabled it again.

    buddhatree, henkjansmits and Guus like this.
  4. Zeeflyboy

    Zeeflyboy Rookie

    I tried this a few days ago in VR. I didn’t do anything scientific but just did a few laps with fpsVR running... not a huge difference, but after enabling resizable BAR there was seemingly consistently just a couple of percent less GPU usage to maintain 90fps.

    @Thomas Fun - what software did you use for making that graph?
    Last edited: Apr 21, 2021
  5. Thomas Fun

    Thomas Fun Racer

  6. Zeeflyboy

    Zeeflyboy Rookie

    buddhatree likes this.
  7. FLO 1337

    FLO 1337 Rookie

    It defiantly works, just got this working yesterday. Took a motherboard bios update, auto firmware update in precision x1 and then a separate bios update in the re-bar tab, update Nvidia drivers and finally turn on "Above 4g decoding". Only tested 2 games so far Forza Horizon 4- gained between 8 and 10 average frames and Dirt 5. Dirt 5 had high frame rates but not smooth looking with ray tracing on without bar, with it on looks smoother and no noticeable stutter. Ill defiantly try and add ACC.
    buddhatree likes this.
  8. henkjansmits

    henkjansmits Simracer

    Seems inconclusive at the moment. Ill wait for some more early adopters to take the plunge :)
  9. FLO 1337

    FLO 1337 Rookie

    Did some Fraps testing: ACC used a replay, not sure if this is the most valid way of testing but here are the results

    Test 1 Bar on
    Frames Time (ms) Min Max Avg
    20477 120000 115 204 170.642

    Test 1 Bar off
    Frames Time (ms) Min Max Avg
    20497 120000 114 203 170.808

    Test 2 Bar on:
    Frames Time (ms) Min Max Avg
    20437 120000 115 204 170.308

    Test 2 Bar off:
    Frames Time (ms) Min Max Avg
    20501 120000 116 204 170.842

    AC test:

    Bar off:
    AC VERSION: 1.16.4 (x64)
    POINTS: 34374
    FPS: AVG=234 MIN=16 MAX=275 VARIANCE=8 CPU=91%
    GPU: NVIDIA GeForce RTX 3080 (2560x1440)
    OS-Version: 6.2.9200 () 0x300-0x1
    CPU CORES: 16
    AA:4X AF:16X SHDW:4096 BLUR:0
    PP: QLT:5 HDR:1 FXAA:1 GLR:3 DOF:0 RAYS:0 HEAT:1

    Bar on:
    AC VERSION: 1.16.4 (x64)
    POINTS: 33993
    FPS: AVG=232 MIN=33 MAX=274 VARIANCE=8 CPU=91%
    GPU: NVIDIA GeForce RTX 3080 (2560x1440)
    OS-Version: 6.2.9200 () 0x300-0x1
    CPU CORES: 16
    AA:4X AF:16X SHDW:4096 BLUR:0
    PP: QLT:5 HDR:1 FXAA:1 GLR:3 DOF:0 RAYS:0 HEAT:1
    buddhatree likes this.

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