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Photoshop 21.0.2 slow on Mac Mini (Late 2014) macOS 10.15.2

Community Beginner ,
Jan 01, 2020 Jan 01, 2020

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I'm experiencing a lot of lag/drag when doing the following:

  • Painting with normal paintbrush
  • Selective mask dialogue/refine edge tool
  • Blending brush

I'm a photographer working on 45MP images with multiple layers (TIFF or PSD) so the files do get quite large, but I'm hoping that I don't have to upgrade to a new computer.  Here's my specs:

 

Screen Shot 2020-01-01 at 8.44.29 AM.png

 

I've tried doing pretty much everything recommended in the Optimize performance help page, with little to no noticable results.  Does anyone have any recommendations?

 

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Mac, Performance

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Adobe Employee ,
Jan 01, 2020 Jan 01, 2020

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Hi there,

Sorry to hear about the slow and laggy performacne of Photoshop, as you've already tried multiple troublesooting steps, could you please try deselecting "Use Graphics Processor" located in Photoshop's Preferences > Performance, then relaunch Photoshop and let us know if it helps?

 

Also, could you please try enabling "Legacy compositing" located in Photoshop's Preferences > Performance, then relaunch Photoshop and let us know if it helps?

 

Regards,
Sahil

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Community Beginner ,
Jan 01, 2020 Jan 01, 2020

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Using your recommendations, here are my settings (I tried both, first one, then the other, then simultaneously), and the GIF attached shows the results.Screen Shot 2020-01-01 at 1.36.49 PM.png

Kapture 2020-01-01 at 14.19.14.gif

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Community Beginner ,
Jan 02, 2020 Jan 02, 2020

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As a note - I just tested the exact same settings in Photoshop 2019 CC and it worked flawlessly.

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New Here ,
Jun 05, 2021 Jun 05, 2021

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Glad to see that I am not the only one experiencing that severe lag with brushes. I have a Mac Mini 2018 3.2Ghz and 64 Go RAM and it does the same thing. Have you try a solution other than buying an eGPU?

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