DisplayCAL ICC Color Profile make the Mac Pro 2019 is SUPER SLOW!

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  • #22523

    Penn
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    I’m using Mac OS 10.15.3, and I use DisplayCAL and Colormunki Photo to Calibrate my Monitor and Create ICC for my Monitor.

    In DisplayCAL I select a Testchart with 4954 colors(not sure whether the color number will be a problem)

    It is so wired if I use that ICC to start up the MAC, After the login page, the mac will become SUPER slow, take few mins to load all the app, and run Chrome super slow, Even changing the chrome tab will take 2-3 secs. The scrolling and typing are almost impossible.

    BUT If I activate the default ICC or other ICC create by other software, the speed will become normal again!

    Even later I click back to that DisplayCAL ICC will still normal.

    JUST CAN NOT BOOT WITH ICC created by DisplayCAL.

    I have attached screenshot ICC info

    left-hand side created by i1 Studio(default software) and Right-hand side by DisplayCAL

    I have also attached the ICC, does anyone know why is this? thanks a lot

    is there any setting I set it wrong?

    • This topic was modified 3 weeks ago by Penn.
    • This topic was modified 3 weeks ago by Penn.
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    #22547

    Florian Höch
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    Profile looks fine. Try calibrating to native (“As measured”) whitepoint. Also, I would not recommend installing profiles system-wide on single user systems.

    #22571

    Penn
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    Will try it again with native (“As measured”) white point. and see how it goes

    as to system-wide, I have created the profile as system-wide at the end of the calibration process, but I reinstall the system, but have backup the icc file, then  on a new system, I only copy file to MacHD/User/Username/Library/ColorSync/Profiles/

    Is this consider as system-wide?

    #22613

    Penn
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    I have tried all those two settings, save for single user, and As measured whitepoint, the problem remains.

    I can even easily feel a short freeze when clicking on DisplayCAL ICC.

    is it because of DisplayCAL using v2 ICC?

    #22701

    Florian Höch
    Administrator
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    I only copy file to MacHD/User/Username/Library/ColorSync/Profiles/

    Is this consider as system-wide?

    No, that is your user folder.

    is it because of DisplayCAL using v2 ICC?

    It has nothing to do with v2 or v4. Something seems to be amiss on your system. Did you calibrate to native whitepoint? Set white level to “as measured” as well.

    #22730

    Penn
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    I have tried different settings.

    Tried both  778 and 4954 test chart.

    also whitepoint, whitelevel all set “as measured“

    found that  whitepoint, whitelevel all set “as measured“ make no different.

    but change the test chart to 778 will make it a bit faster, but still abnormally slow especially when using Chrome. (other app will also laggy, but chrome are more obvious)

    After restarting the Mac, Launch the Chrome, then click different tabs, will have 1-2 secs delay.  when using 4954 test chart will have even longer delay will be almost unusable.

    I have Records a video. in the video, I use the 778 test chart icc, I click the mouse instantly once the tab change(will have delay when using DisplayCAL icc). You can see how much speed different when I using other app generated icc and DisplayCal generated icc.

    http://bit.ly/2H3BQAv

    but wired thing is that when I click on 3-4 different ICC then click back to DisplayCAL generated ICC will back to normal speed, but just cannot boot with DisplayCAL generated icc

    #22752

    Florian Höch
    Administrator
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    Use defaults.

    #22840

    Penn
    Participant
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    I tried all methods, just profiles created by Display CAL will causing the issue. sometimes  I click on 3-4 different ICC then click back to DisplayCAL generated ICC still have the same issue.

    What is the main difference between the ICC created by DisplayCAL and i1Studio or Monitor Default ICC?

    What I can see from the ICC info are the V2 and V4. Is it possible to Generate V4 ICC from DisplayCAL? thanks a lot

    #22927

    Florian Höch
    Administrator
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    What is the main difference between the ICC created by DisplayCAL and i1Studio or Monitor Default ICC?

    The profile created from actual measurements contains calibration. Canned profiles do not.

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