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Poor performance when drawing masks

Scott Danzig
When I casually try to draw a mask, Capture One 8.2 seems to freeze up for a while before it starts responding again. Sometimes I can get tweaks in without much lag, but it always lags a lot with the first mask on an image. I have 22GB memory in a 2010 Mac Pro with OSX Yosemite. Admittedly dwindling HD space, with only 200GB left, but that shouldn't be related, right? How can I up this performance? It's hindering my ability to use local adjustments. I'm not sure if this problem is new to 8.2 or if it was present in earlier versions, as I'm starting to get more comfortable with masking lately.
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6 comments

Date Votes
  • gfingerl
    Is OpenCL turned on? Then try to switch it off or vice versa. Maybe it helps.
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  • Scott Danzig
    Is OpenCL turned on? Then try to switch it off or vice versa. Maybe it helps.


    It might've helped the rendering of thumbnails, but the mask drawing still makes Capture One freeze for a while.
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  • Daniel Foster
    I noticed some lagging after having worked on several multi-layered images one after another. This on my 2013 iMac (32 GB ram, 1 TB SSD under 10.10.2). I then quit out of CO and restarted it. Lagging gone. Cache filling up ram with prior states or image histories? I don't know. Seems like it shouldn't do this. But the work-around was easy.
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  • Boris Sheikman
    I have a mid-2011 iMac and I notice some lag but it is very, very minute. The computer is too old and too low end for hardware acceleration support so the CPU must be doing all the hard work.

    I know this information doesn't solve your issue but I wanted to offer it as a data point.
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  • Permanently deleted user
    [quote="sdanzig" wrote:
    When I casually try to draw a mask, Capture One 8.2 seems to freeze up for a while before it starts responding again. Sometimes I can get tweaks in without much lag, but it always lags a lot with the first mask on an image. I have 22MB memory in a 2010 Mac Pro with OSX Yosemite. ... .


    I take it you mean 22GB of RAM, but you do not mention anything about the graphics card that you are using in your Mac Pro 2010 and the display that you have attached to it.

    I for myself figured out that when using a 'scaled resolution' in OS X system settings that drawing masks was laggy often. Changing it to 'default for display' solved it for myself (for the sacrifice of having 'huge' text and icons all over my OS X 😄.
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  • Scott Danzig
    Yes, AndyE, I meant 22GB. Well, I'm not sure exactly what did it, but I'm sure I restarted Capture One enough, and maybe closed some other apps, but drawing masks is working reasonably fast now. I wish I had a better idea why. I just noticed, "Hey, masks seem to be performing well now!" I didn't have to change my display resolution, fortunately.
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