Photoshop slower loading since Windows 10 update KB4056892

I believe I have isolated the cause of the slowdown.  I run PS on 2 machines. One does not have most recent Windows 10 update applied (keeps rolling back without reason - but thats another story).  This machine loads PS in 12 - 15 seconds running off an SSD and 8gb RAM.  The 2nd machine, recently built with all Windows 10 updates applied, loads PS in 30-40 seconds.  Clicked on 'Reset Preferences after Quit' - Exited and reloaded PS.  Total load time dropped to 8-10 seconds.  Noticeable difference during initialization while 'Reading Preferences'.  Repeated test multiple times invoking PS directly from executable, from Bridge, and launched when clicking on .PSD file.  All with identical results.  For whats it worth, the default preferences file is adequate for me and I can set the 2 preference changes I want after load.  So going forward I will simply click on 'Reset Preferences after Quit' when I end a PS session.  Next invocation will again load in 8 - 10 seconds.  If your running off an SSD and have minimum 4gb RAM, all other preference changes to improve performance are marginal.

Try it, you'll like it!

I am so glad I found this thread because I thought I was crazy when it was taking forever to switch from Lightroom to Photoshop to edit a RAW file and then back.  I will not mess with uninstalling or preferences and hopefully a patch will fix it in the near future.

Thanks to all responders for their advice.  I wonder what has made my system susceptible to a slowdown when others are not affected? Incidentally, I tried resetting preferences but it made no difference to load speed. I guess I will just have to live with it.

It slows every switch between system and app. we can’t know how many of these there are, but disk I/O of course switches. However I think this isn’t important because the I/O overhead was already large.

I see that when opening, CC spends a lot of time reading the preferences.  Seems much longer than before.  Can anyone tell me, please, what the software is looking at in Preferences that might slow the loading?

Thanks.

Good point. While the Spectre fix is a catastrophe, we shouldn’t assume it’s to blame for everything. Especially when video drivers have such an established pattern of Unwanted behaviour.

Unlikely the warranty would cover that. If it does, it will put many computer manufacturers out of business. I think we are entering a period where compulsory hardware upgrades are going to be needed. Very frequently. Until something pops.

This is unlikely to be something Adobe can fix. The patch is designed to make systems slower, for security reasons. How much slower it makes them depends on your type of work, the exact  CPU chip and other factors. Chips older than 2010 are particularly likely to be bad. A lot of people will need new computers, but they aren't available yet. This is a very serious issue, and likely to be what the future holds in spades.

yep.  I've noticed a HUGE downgrade in performance since the windows update for all CC products....because I reinstalled many older versions to test them.  CS6 is actually fine, but any CC version is just slow, laggy, unresponsive and generally not fun to use.  It's extremely frustrating.  I tried rolling back the update but windows insists on installing it on every reboot.  Perhaps adobe can issue a patch to address the CC issues.  BTW I have tried all the normal PS troubleshooting things....it is definitely this windows update.