Photoshop: Very slow opening local files after opening any network files

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All of the the files in question are c.200k jpg files.

If I open the file from my local disk, the file opens almost instantly.

If I open another file from a network drive, it takes approx 7-10 seconds to open the network file.

Opening subsequent local files now takes 7-10 seconds per file to open, despite the network file having been closed.

Clearing the prefs file resolves this, and allows local files to be opened quickly.... until I open another file from the network.

System:
Win 7 64 Bit, fully patched and updated.
Photoshop CS5.5 (part of Master Collection) fully updated

Copying files to/from the network to my local disk is fast, network diags and speed tests show no speed/lag problems.

Why does photoshop get slow opening local files after it has "seen" a networked file?
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Les Howlett

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Posted 5 years ago

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Chris Cox

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Clearing prefs means it's probably related to the recently used files list. Somehow updating that list (verifying that the files are still available) is taking longer than it should, but not so long that Photoshop kicks the file out as being on a "slow" filesystem.
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Les Howlett

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Do you know if there is there a way to disable the recently used files list in photoshop to test this?
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Les Howlett

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Seems to be confirmed that it is the previous files list, if I set this to zero, then back to four it opens local files quickly. But the same problem occurs after I have opened a network file.

If I leave the previous files list set to zero the problem still occurs.... surely if it is set to zero it should not be checking for previously opened files??
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Chris Cox

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Actually, Photoshop keeps a list regardless of how many are shown. BUT it only updates the ones shown for the menu. So that points to the menu update causing the slowdown, and something between the OS and file server going very, very slowly. While a network file is open, Photoshop will check the original file location for updates to the file (to let you know if it has been changed remotely). That again points to something between your OS and the file server being unhappy.

Unless the file server is located on the other side of the world (or running NetWare), it shouldn't be that slow. So something isn't quite right with the way the OS and file server are talking.
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Les Howlett

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The network file doesn't have to be open though, it just has to have been opened sometime in the past, and this persists even after photoshop is closed and reopened. So surely it shouldn't be looking at the network location if the file is closed?

The file server is about 30 feet away connected with gigabit cabling and switch.

The server is a mac server and the windows system connects via samba to the share. Ping and Speed (data transfer) tests to the server don't indicate any problem with connectivity or transfer speeds... and copying the file over to the desktop from the server is almost instantaneous....

Is there any way that I can disable photoshop from performing the updates on previously opened file(s)? Some registry key perhaps?

Why if the files list is set to zero does it still check the previous files for changes?

PS. This didn't happen with CS3 on Win7 32 bit, it only started after a fresh install of Win7 64 bit and fresh install of CS5 Master Collection....

Thanks for your help in chasing this down!

Les.
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Les Howlett

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Ah, you got me thinking about the communication between the mac server and the win 7 system.... found a solution it seems - well it works on my test system anyway!

I will try it on the production system later and report back....

If anyone wants this in the future this is what I have done...

On the Windows system
Control Panel - Administrative Tools - Local Security Policy
Local Policies - Security Options
Network security: LAN Manager authentication level
Send LM & NTLM responses - use NTLMv2 session security if negotiated

Minimum session security for NTLM SSP (clients)
Disable Require 128-bit encryption

Minimum session security for NTLM SSP (servers)
Disable Require 128-bit encryption

Remove the stored credentials for the Samba share.
Control Panel -> Credential manager.

Fingers crossed!
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Les Howlett

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Nope! No joy.... :(
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Sean Dawkins

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I'm having this same problem.

Because of this thread I now know its tied to the recent files menu. I've also noticed that more network files I open, then close, the slower the local files go.

I'm using 60K tif files that take 7-10 sec to open across a network.
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Les Howlett

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Sean, I concur, the more files you have open the worse the speed gets... does this occur in Windows itself when copying files across the network?
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Sean Dawkins

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Is the recents list a file that could possibly be corrupt? If so can that be thrown away so that a new one could be rebuilt?
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Chris Cox

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It's possible, but unlikely that it would be corrupt. If an entry were corrupt, the OS wouldn't find the file and it would be removed from the list (and thus not affect anything after that first check). More likely is that some part of the OS or another installed app is causing things to slow down when Photoshop checks to see if the files are still available. That could be a bad file server, or bad anti-virus software (or malware), bad backup software, bad asset management software, etc.
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Les Howlett

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Is there a way to remove or disable the recents list?
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Sean Dawkins

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What is the name of the file. I'd like to try and delete it, so that it will rebuild a new one and see if that helps.
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Les Howlett

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you can reset the file to defaults by hold down Alt, Ctrl, and Shift keys while starting up Photoshop.

To delete (or rename temporarily) the prefs file you can find the file:-

Under Win 2k/XP the preference file will be found at:
%windir%\Documents and Settings\[username]\Application Data\Adobe\Photoshop\[version #]\Adobe Photoshop [version #] Settings

Under Vista or 7, look at:
Users/[Username]/AppData/Roaming/Adobe/Adobe Photoshop [version #]/Adobe Photoshop [version #] Settings
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Les Howlett

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But this problem did not occur in Photoshop CS3 on Win7 32bit?

It also does not occur on a Mac running CS5 on the same network opening the same files from the same source.

Nothing has changed in terms of server hardware/networking...

Windows itself shows no problems accessing and copying the files to/from the server, and speed/bandwidth tests show no issues from the OS to the server....

Indesign CS5.5 does not exhibit the same slowdown on the same system....

Could this be a bug in Photoshop CS5.5?
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Les Howlett

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Actually that is a good point!
I have just checked and yes the same problem occurs launching photoshop 32bit.

Only photoshop mind, not any other adobe apps....

Are there any parts of photoshop that are shared between 32/64 bit versions that might be the cause of this slowdown?
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Yali Lei, Quality Engineering Lead

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I'm not sure the shared parts between 32/64 bit.
In my side, after opening a file from remote server, it is slow opening local files. But if close the remote file, then opening local files is as usual. And this issue doesn't occur on Mac.
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Les Howlett

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Yali, what version of Windows are you running?

I can confirm this issue doesn't occur on a mac, only on the windows systems, and only on Win 7 64 bit (Ultimate).

I have tried closing the opened network file, and even disconnecting the server connection, but the only way I can get it to speed up to normal again is to clear the prefs file.

Les.
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Sean Dawkins

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My problem happens on both 32 and 64 versions of Photoshop.

Both running on Win 7 64 bit.
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Yali Lei, Quality Engineering Lead

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I'm running Win 7 64-bit (Enterprise).
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Les Howlett

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This issue was not present in Photoshop on the same PC hardware / Network setup using Win7 32bit and CS3.

The server hardware/cabling/network has not changed.

The issue is not present when copying files using the OS (Win 7 64 bit).

Bandwidth/Speed testing shows no problems between the PC/Server.

This issue does not occur in Indesign on the same system, but only in Photoshop....

Sean - can you test to see if this problem occurs in other Adobe apps on your system? Is your system 64 bit or 32 bit and what version of Photoshop are you using?

Does this look like a bug of some sort in Photoshop CS5.5 64 bit?
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Sean Dawkins

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I can tell you it doesn't happen when I open the same files in Illustrator.

I'm running Win 7 - 64 bit CS5. Also, it seemed to run fine at the beginning (new computer and new CS5) then the major slow-down occurred.

Here are some times:

12 - 60k - tif files from the network

Photoshop - 4 min 45 sec
Illustrator - 6.8 sec
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Les Howlett

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That bears out roughly the same times I get when opening files in photoshop and (in my case) indesign. Have you tried without the AntiVirus activated - I did and got no difference in load times.

What version of CS5 do you have installed?

We have CS5.5 Master Collection.
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Sean Dawkins

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CS5 Master collection

Version 12.0
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Les Howlett

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@Chris - is the HKEY_CURRENT_USER\Software\Adobe\MediaBrowser\MRU\Photoshop\FileList relevant to this?
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Chris Cox

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It might be, but probably not -- Photoshop only writes to that list for Bridge to read.
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Sean Dawkins

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Here is some more time trials.

Opening 12 - 60k tifs

Photoshop - 3 min
Illustrator - 8 sec

Opening 12 - 4mb tifs

Photoshop - 3 min 30 sec
Illustrator - 12 sec

It doesn't seem to be the amount of data through the network but rather an operation that is bogging down/pausing.
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Chris Cox

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Again, most likely the request for "does this file still exist" is taking longer than it should due to something about your network setup or your system.
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Sean Dawkins

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If Illustrator keeps a similar list, why does it not slow down. Does the list in Illustrator work differently somehow?
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Les Howlett

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Sean - do you have Bridge installed?
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Sean Dawkins

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Yes, I use it primarily to create thumbnail PDFs
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Sean Dawkins

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I just noticed that you don't have to clear the recents menu manually. I opened 28 files from my drive (without clearing the list) and each file opened quicker that the last until they were opening at a speed that one would expect.
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Jeffrey Ziegler

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Had same problem on network connected Macbook. When shared volume was mounted on Macbook desktop opening ANY PS file, even on the desktop, was very slow. Fixed the problem by repairing permissions on the Macbook. Files now open fast. (OS 10.6.8 and PS 10.0.1)