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Software Question


iMac running very slow after macOS Sierra upgrade

03/16/2017 701 views

Upgraded to macOS Sierra from Yosemite and all hell broke loose. It runs poorly, delays and I often have to force-quit applications. How can I speed up my iMac?

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Community Chosen Answer

1
If you really need to do an "in-place" upgrade with preservation of all your data, you might try downloading the techie app "Cocktail" here for Sierra:

www.maintain.se

and run the Pilot cleanup routine within that app.

If you can back up all your data somewhere else (via Time Machine or other means), boot to the Recovery Partition by holding down Cmd-R during startup, wipe the drive with Disk Utility, and install Sierra clean.

Be aware too, that sometimes factors related to your storage media (SSD vs. HDD) and RAM levels will greatly affect performance.  SSD storage and 8 GB RAM minimum both come highly recommended for ultimate speed with Sierra and El Capitan, especially.
Answered 03/16/2017 by: NinjaMac
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Hi, there can be some reasons for the slow iMac performance,  major ones are the accumulation of a large number of junk files, operating system related problem to name a few.

It seems you are new on the Mac and have not prior experience in optimizing the slow Mac performance. I suggest you implement these below-mentioned tips and tricks and let me know if they are beneficial for you in any manner or not.

1. Turn off all the visual effects on iMac: Go to your iMac System Preferences> Dock and uncheck all the visual effects related check boxes.

2. Update all the old running software with the new, latest version: Sometimes, only updating the software with the new version can help in improving the Mac performance. 

3. Take a close look at the StartUp items: Check which StartUp items are consuming more system resources and kill the resources hungry process. 

4. Clean your macOS hard drive: Use a macOS cleaner software http://www.itninja.com/link/remove-duplicates-files-from-mac-uninstaller-included to remove all the junk, cache, log etc. data that sometimes become the main culprit of a slow Mac. 
Answered 03/16/2017 by: peteosmac
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