Photoshop: Very slow image refresh when undoing/redoing a crop

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  • Updated 3 years ago
  • (Edited)
When I crop an image in Photoshop I usually repeatedly press cmd+z afterwards in order to undo and redo the crop. I do this in order to see a before and after of the crop and to be able to judge it better. I have probably been doing this in Photoshop for 15 years. But starting only with the new version of Photoshop (2015.1.2) this does not work properly anymore as the image refreshes very slowly and the checkerboard pattern appears in between, making it impossible to properly judge the difference.

Why this sudden decrease in performance?
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Bernd Borowska

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Posted 3 years ago

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Chris Cox

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That sounds like a video card driver issue slowing you down (that, or you created a HUGE image).
What OS version are you using?
(Edited)
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Bernd Borowska

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Thanks for replying! I am using OS X 10.9.5 on a 2010 Mac Pro with an ATI Radeon HD 5770 video card.

I happen to still also have Photoshop 14.2.1 installed, and using identical settings in the "performance" tab of the settings the same images perform flawlessly in the older version, but not in the new one. This also happens with small images containing only a background and a few adjustment layers.
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Chris Cox

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Try disabling GPU drawing in Photoshop's preferences, restarting the app, and try your copy undo/redo again.

Also, double check the size of the document you created with that crop (because a forgotten DPI value could create a HUGE image).
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Bernd Borowska

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I used several very different images and double checked the document sizes. Additionally, I tried out all the images in Photoshop 14.2.1, where they work fine.

Completely disabling the GPU (unchecking "Use Graphics Processor") took care of the problem. But this brings other problems with it, of course.

In the older version of Photoshop the problem does not exist, even when using the GPU.
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Bernd Borowska

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By the way, the same issue also occurs when I revert an image and then use cmd+z to compare the before and after of my edits.
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Chris Cox

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OK, so the source of the problem is your video card driver, or something outside photoshop conflicting with the driver (like another application using the GPU at the same time).

Yes, each new version of Photoshop uses more of the GPU, and unfortunately exposes more driver bugs (which normally get fixed quickly by the GPU vendors).

On MacOS with an AMD GPU, you have to upgrade the OS to get newer video card drivers.  With NVidia cards, you could get updated drivers directly from NVidia's website.
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Bernd Borowska

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Ok, thank you for looking into this! I guess I will have to finally upgrade my OS...
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Etienne Payet

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Eh... reminds me of what I'm experiencing with the latest Lightroom update :
- Reframing : flickering lines or checkerboard pattern while moving the frame
- Vignetting : flickering black or white solid round frame while I move the cursor
... And I could go on with the numerous artefacts flickering during whatever image manipulation I do.
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Chris Cox

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This topic is about Photoshop, not Lightroom. And you already appear to have a topic created about your issues with Lightroom and your video card drivers.