Core Sync Constantly At 100% CPU Usage.

Aug 23, 2018

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I need help. I have a new MBP 2018 and recently Core Sync is hogging resources, turning my Mac into a frying pan. Constantly chewing up 100% CPU on Sctivity monitor and firing up the fans.

I have closed all processes, uninstalled CC with the official Uninstaller as per previous answers with this issue. Reinstalled and boom, 100% CPU usage. When I'm not plugged into the main I'm lucky to get 30-45 mins battery time with Core Sync running.

Any help would be appreciated.

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Core Sync Constantly At 100% CPU Usage.

Aug 23, 2018

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I need help. I have a new MBP 2018 and recently Core Sync is hogging resources, turning my Mac into a frying pan. Constantly chewing up 100% CPU on Sctivity monitor and firing up the fans.

I have closed all processes, uninstalled CC with the official Uninstaller as per previous answers with this issue. Reinstalled and boom, 100% CPU usage. When I'm not plugged into the main I'm lucky to get 30-45 mins battery time with Core Sync running.

Any help would be appreciated.

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File sync

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Aug 23, 2018 5
Adobe Employee ,
Aug 23, 2018

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Aug 23, 2018 0
Adobe Employee ,
Aug 24, 2018

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Hi Derek,

Sorry to hear about your difficulties.

A few questions and things to test:

  • Would it be possible to capture and screen a screen shot from Activity Monitor?
  • Are you actively syncing files when this issue is occurring?
  • Does unchecking the sync on/off option in the Creative Cloud app preferences make the CPU use go down?

sync_on copy.jpg

  • Also, just to confirm, what version of the Creative Cloud Sync is listed in the preferences?

Please get let me know when you get the chance,

Thanks,

- Dave

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Aug 24, 2018 0
Sep 10, 2018

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Any update on this? Support told me it was my fault that Core Sync was taking up 100% of my CPU and it's because my 64 bit system needs to be upgraded to 64 bit ... not the sharpest tool obviously.

First he said Lightroom was to blame, so I uninstalled it. Not worth the trouble.

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Sep 10, 2018 0
Sep 18, 2018

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I paused the syncing and the CPU went down to normal levels. I am not sure why it uses 100% minimum when it is not paused

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Sep 18, 2018 2
Oct 22, 2019

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Please help! My core sync is also always running at over 100%. My fans are constantly running. And very often my syncing is non-stop. Please help!

Screen Shot 2019-10-22 at 11.37.00 AM.pngScreen Shot 2019-10-22 at 11.38.15 AM.png

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Oct 22, 2019 0
Explorer ,
Oct 28, 2019

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got the same issue on Win 10- core sync prosses, use 100% cpu- when syncing files

wen creative cloud turn off, every thing fine

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Oct 28, 2019 0
Nov 21, 2019

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is there any update on this? i have the same issue on two different macbooks (2016 and 2019) core sync eats up 100% cpu and when i turn it off, my macbooks immediately turn silent. this issue is persistent for months and makes me wonder once more about adobes reliability.

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Nov 21, 2019 0
Dec 04, 2019

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I am having the same issues as camilone. I am on a 15" MBP 2017 model and core sync is slow going and hogging up resources. I have restarted and done all the normal troubleshooting. When this issue be resolved?

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Dec 04, 2019 0
Most Valuable Participant ,
Dec 30, 2019

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Hi, 

Recently the same problem occurred, but it has been resolved. please refer.

https://community.adobe.com/t5/get-started/creative-cloud-draining-battery-like-crazy/m-p/10835260#M...

--
Susumu Iwasaki

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Dec 30, 2019 1
Explorer ,
Jan 12, 2020

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it seems that createv cloud update kind of fiz this- any whay i set up file sinking to low >in settings
this is so anyoing- adobe clouse service was my favorite- and was so seemles on all of my devices. now i can trust it anymore - and im waiting long times just to a few low quality pics.
at my studio i use 2 coputers and an ipad. 

really dont understand the new CC SW 

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Jan 12, 2020 0
Explorer ,
Jan 30, 2020

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This worked! - Finally! - I've been having this problem for like a year and Adobe hasn't provided a solution??

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Jan 30, 2020 0
Explorer ,
Jan 30, 2020

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after 2 SW updates im still having this proplem

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Jan 30, 2020 0
Explorer ,
Jan 30, 2020

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The solution is posted above. SW?

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Jan 30, 2020 0
Participant ,
Dec 01, 2020

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Same issue here. Since 2018 I have always had this issue. No exceptions. On Windows, high CPU of CoreSync is paired with high CPU of Explorer.exe. When I turn on my Surface Book or wake it up from sleep mode (not quite a low-end laptop, I would say), I have at least 5 minutes of constant 100% CPU usage dominated by CoreSync and explorer. I did many things. Changing CPU priority, changing upload/download limit for Creative Cloud, reinstalling Adobe CC (from the official website), reinstalling Windows... Nothing works. Leaves me at the only conclusion left: it must by CoreSync in combination with explorer. Please do sort it out.

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Dec 01, 2020 0
Participant ,
Dec 10, 2020

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Seems now that as soon as I force quit my Explorer.exe, the CPU load decreases dramatically (briefly towards ~20% for Core Sync, but soon after closer to 0). I would have to verify this, but I think that explorer.exe does interfere with Core Sync or vice versa. If I quit explorer, Core Sync has time to do its job. If I quit Core Sync, it will reappear, same issue. Anyone following this issue?

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Dec 10, 2020 0
Participant ,
Dec 10, 2020

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You can ignore my latest comment. Quiting explorer.exe has no notable effect. If the sync is still actively hogging up CPU, it continues to do so when explorer.exe is killed.

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Dec 10, 2020 0
Participant ,
Dec 18, 2020

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For anyone on a Windows PC, I learned that CC has trouble with folders that contain many files: once I consolidated these folders into ZIP files, that impacted the performance quite positively. And every time I progressed into reducing the amount of folders with many files, performance improved even more. 

 

Still, for a very brief moment, CoreSync and Explorer together manage to gobble up ~50% of CPU (which causes my CPU to be used 100% for that brief moment), but at least I do not have to wait that long anymore.

 

Though that this works, it also feels like a workaround to me. I still think that this is a problem.

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Dec 18, 2020 0
Explorer ,
Dec 20, 2020

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thank you.
for me now the issue fix itself after so many updates...

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Dec 20, 2020 0
MHicken LATEST
Jan 13, 2021

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I still see this issue occasionally on my macbook pro. It usually right after updating some adobe apps. If I open all the apps that were recently updated, then close them, the problem goes away. I just validated this after the latest 2021 update.

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Jan 13, 2021 0