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Thread: Fast computer, slow DOSBox

  1. #1
    Join Date
    Oct 2009
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    Xubuntu 12.10 Quantal Quetzal

    Fast computer, slow DOSBox

    I'm running DOSBox 0.74 on Xubuntu 12.10 64-bit, and have run into some serious performance issues.

    My CPU is an i5-3210M, but I'm only getting about 30 fps in the Quake timedemos. I've seen slower machines get 100+ fps. Other games are running sluggishly as well.

    My DOSBox config file is more or less stock. Any ideas as to what might be causing this? (I'm tempted to blame the 64-bit OS, but that's just a wild guess.)
    Asus U47A, Core i5-3210M 2.5 GHz, 12 GB DDR3, 750 GB HDD

  2. #2
    Join Date
    Apr 2005
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    Ubuntu 12.04 Precise Pangolin

    Re: Fast computer, slow DOSBox

    Quote Originally Posted by Maximus559 View Post
    My DOSBox config file is more or less stock.
    What changes have you made?

  3. #3
    Join Date
    Oct 2009
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    Re: Fast computer, slow DOSBox

    Quote Originally Posted by kostkon View Post
    What changes have you made?
    fullresolution=1366x768
    output=overlay
    aspect=true

    Setting these back to default makes no difference. Haven't touched any CPU or sound settings.
    Asus U47A, Core i5-3210M 2.5 GHz, 12 GB DDR3, 750 GB HDD

  4. #4
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    Re: Fast computer, slow DOSBox

    Quote Originally Posted by Maximus559 View Post
    fullresolution=1366x768
    output=overlay
    aspect=true

    Setting these back to default makes no difference. Haven't touched any CPU or sound settings.
    Why not openglnb for output. It will nicely scale your game, like overlay does, but will also be hardware accelerated.

    Also, since it is a demanding game, try following the tips outlined here, like setting the cpu core to dynamic and cycles to max.

  5. #5
    Join Date
    Oct 2009
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    83
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    Xubuntu 12.10 Quantal Quetzal

    Re: Fast computer, slow DOSBox

    Quote Originally Posted by kostkon View Post
    Why not openglnb for output. It will nicely scale your game, like overlay does, but will also be hardware accelerated.

    Also, since it is a demanding game, try following the tips outlined here, like setting the cpu core to dynamic and cycles to max.
    That's good to know about openglnb; unfortunately, it didn't make a difference in this case. Neither did core=dynamic or cycles=max.
    Asus U47A, Core i5-3210M 2.5 GHz, 12 GB DDR3, 750 GB HDD

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