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Question Low fps and low system usage

Discussion in 'Scripting' started by kinglotrich, Oct 4, 2023.

  1. kinglotrich

    kinglotrich

    Joined:
    Jun 2, 2023
    Posts:
    22
    when ı first open unity ı get 160 fps on empty scene know it is 80 and some times 40 so started lag but when ı check system gpu and cpu usage is too low how can ı fix it and increase system usage ? need help lag started being annoying
     

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    kinglotrich, Oct 4, 2023
    #1

  2. Ryiah

    Ryiah

    Joined:
    Oct 11, 2012
    Posts:
    20,124
    Task manager is an awful way of measuring CPU usage. If an application is only using a single core it will only show about 6.25% on an 8-core/16-thread CPU. Unity is single-threaded therefore what you're seeing is it maxed out on CPU usage.

    Unity's profiler is the only correct source of information, and even then you should only rely on it in a build as the editor adds its overhead to the results.
     
    Ryiah, Oct 5, 2023
    #2

  3. kinglotrich

    kinglotrich

    Joined:
    Jun 2, 2023
    Posts:
    22
    is not there anything ı can to increase performance in editor? I built game and it work normal but editor is too slow
     
    kinglotrich, Oct 5, 2023
    #3

  4. Ryiah

    Ryiah

    Joined:
    Oct 11, 2012
    Posts:
    20,124
    Just faster hardware. You're already on a decent system though so it wouldn't help that much.
     
    Ryiah, Oct 5, 2023
    #4

  5. Nad_B

    Nad_B

    Joined:
    Aug 1, 2021
    Posts:
    326
    Check the profiler, something is making it run slow, and you'll find it there.

    Since you said it starts fast than become slower over time, I highly suspect a memory leak (from a tool/asset or your own code).
     
    Nad_B, Oct 5, 2023
    #5

  6. MelvMay

    MelvMay

    Unity Technologies

    Joined:
    May 24, 2013
    Posts:
    10,507
    As above, don't use the profiler simply as a glorified FPS counter, actually use it to see what is making it slow then make decisions based on the facts it provides rather than what devs on a forum think. :)
     
    MelvMay, Oct 6, 2023
    #6
    Nad_B likes this.