Photoshop CC 2017: Slow saving on macOS

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  • Problem
  • Updated 2 years ago
  • Solved
  • (Edited)
Since the update to 2017 CC Photoshop, it is taking far too long to save a moderately sized file. Up to 2 minutes for a 90MB file. I am running a 4 GHz iMac with an SSD Hybrid HD, 32GB of RAM and an AMD Radeon R9 M295X graphics card (4GB). The machine is plenty fast enough. Looking at the activity monitor reveals 30% core use, so not very conclusive. I discarded the settings file on photoshop startup, and was able to save one file at the correct speed, that is to say, about 2 seconds, then it reverted to the slow behaviour. Further discarding of the settings file did not change this behaviour.
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Paul Litherland

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Posted 2 years ago

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John Maguire

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Next time this happens, see how much memory PS is using. I'm experiencing similar situation but on a PC
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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Is Photoshop up to date? https://helpx.adobe.com/photoshop/kb/uptodate.html

Are you saving to the local drive? An external drive? Or a server?
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Paul Litherland

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Yes, saving to the local drive. As I mentioned, in the one instance where it saved at the normal speed, it only takes two seconds
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David, Official Rep

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Hi Paul,

Do you have a bunch of fonts either on your system or in the file?  I'm assuming the normal speed and slow save files are the same size, right?

Thanks,
David
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Paul Litherland

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Thanks for your reply, no there aren't a lot of fonts on the machine. I have never added any. 

Yes to your question about whether the normal speed and slow save files are the same. In fact they were the same file.
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David, Official Rep

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Hi Paul,

Just to follow up on this some more.  How much free space do you have on your hard drive?  Your scratch disk(s)?

You said that the file is 90MB.  What kind of layers do you have?  Graphics?  Text?  Artboards?

Just trying to help narrow this down a little.

Thanks,
David
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Paul Litherland

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Thank you for getting back to me on this. I deleted Photoshop CC 2017.0.1 and downgraded to 2017.0.0, and the problem is resolved. Saves are now in the order of 2 seconds for 90 MB.
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Paul Litherland

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OK something has happened and we are back to slow saving in spite of the downgrade to 2017.0.0. How do I track this problem down? A file that was saving in 1.5 seconds is now taking 45 seconds to save. 
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Paul Litherland

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I am also having trouble with Adobe CC desktop app, it seems to be unable to update, are these related?
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Paul Litherland

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Looking at my Apple System Log I see there are endless Assertion Failures : 
p.p1 {margin: 0.0px 0.0px 0.0px 105.0px; font: 11.0px 'Helvetica Neue'}

Apr 1, 2017, 1:55:47 PM Adobe Photoshop CC 2017[693]: *** Assertion failure in -[NSEvent subtype], /Library/Caches/com.apple.xbs/Sources/AppKit/AppKit-1404.47/AppKit.subproj/NSEvent.m:2520

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David, Official Rep

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Howdy Paul,

I wonder if your font cache has become corrupted and/or you have a corrupted font.  I know that Apple has multiple versions of Helvetica Neue due to some bugs.  Try removing that font and then clearing both your font caches (instructions here: https://helpx.adobe.com/photoshop/kb/troubleshoot-fonts-photoshop.html).  Then try the validation script.  This might point to the problem or could at least rule out one possibility.

Thanks,
David
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Paul Litherland

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Thank you for your response David, I went through the font cache and conflict resolutions posted on that troubleshooting page, but unfortunately no luck. 
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Paul Litherland

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I think I found the problem. The photoshop images that were giving me the slow saves were coming from Lightroom. I had a look at the LR export settings for the tiff images and found that they were being compressed as Zip files. Compressing them as LZW or not at all seems to have resolved the slow saving issue.
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Paul Litherland

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Although this seems to have resolved the problem, why would resaving a 100MB tiff file with .zip compression take 50-60 seconds as opposed to 3 seconds? just wondering, and not entirely convinced this was the only reason for the slowness.
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Max Johnson, Champion

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The save-as-tiff dialog in Photoshop lets you choose LZW vs Zip as compression options and specifically calls out that Zip is smaller files but longer save-time. It's because the zip algorithms used to crush the file size down are much more complex and CPU intensive.

So the extra time is your CPU stuffing a comforter-quilt into a soda can. When that's done, the actual write-to-hard-drive time is probably almost the same.
(Edited)
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Paul Litherland

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Thank you for this clarification! I just hope I remember 5 years from now when I have the same issue.