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High CPU usage when downloading a file

  • When downloading a file at 2+ MB/sec (from yandex.net) Opera heavily eats CPU on my PC (1 core is utilized 50-80%), which makes the browser and other application hardly usable.

    I usually download with Download Master, and it doesn't occupy CPU (at least this is hardly noticable) at same speeds.

    Opera: 64.0.3417.92 (32-bit)
    OS: Windows 7 64-bit SP1
    PC: Lenovo B580 / Intel Core i3-2328M 2.20 GHz / 16 GB RAM

    It seems to be a know issue, which presumably is (will be) fixed in 66 version.

  • The issue you linked to has to do with the audio indicator animation in the tab causing high CPU usage when audio is playing. Downloading a file seems like a totally different issue.

    When downloading a file at 2+ MB/sec (from yandex.net) Opera heavily eats CPU on my PC

    Do you have a link to the file you're downloading? Or, is it an attachment in your email? I'm not seeing high cpu usage when downloading http://releases.ubuntu.com/19.10/ubuntu-19.10-desktop-amd64.iso for example in Opera 65.0.3467.48 64-bit on Windows 10.

  • @burnout426 . thanks for trying to reproduce the issue.
    Yes, it happens always on my PC with this file - https://yadi.sk/d/93TjorEtVX3eu (I've tried to re-download it).
    When the Downloads window is opened the CPU usage increases a lot, whithout the window it is about 20% which is too high for an ordinary download.

  • @antonk said in High CPU usage when downloading a file:

    Yes, it happens always on my PC with this file - https://yadi.sk/d/93TjorEtVX3eu (I've tried to re-download it).

    Okay. I'll test with that later when I'm on a faster connection.

    Opera: 64.0.3417.92 (32-bit)

    I'll also test with 32-bit Opera and Opera v64 instead of just 65+ and 64-bit Opera. If it's in Opera v64 though, it might already be fixed for you in 65.

    (Are you purposely using the 32-bit version of Opera?)

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