My brand new iMac "Late 2015" is SO SLOW. Why?

I purchased an iMac 2.7GHz, 8GB RAM, 1TB HD back in June 2015 (a "late 2013" version it turned out). I just got a spinning wheel all the time. Apple was nice to talk to me twice, had me wipe the HD and reinstall a clean El Capitan to no avail. Then, they agreed it was unusually slow and gave me a brand new "late 2015" iMac.

Well, this new "late 2015" iMac doesn't seem to be much better. Everything is a class in patience. Even starting up System Preferences takes 30-45 seconds and a spinning wheel.

IS THIS FAMILIAR AND NORMAL FOR AN iMac?

I have two retina macbooks and 4 macbook airs, and none of them are this incredibly slow...in fact, I never think about waiting. Which is all I do with this iMac.

Is there a trick?

iMac, OS X El Capitan (10.11.1)

Posted on Nov 9, 2015 12:12 PM

Reply
Question marked as Top-ranking reply

Posted on Nov 6, 2017 11:44 AM

You’re trying to use computer hardware/software resource intense graphics apps like Adobe CC and Quark Xpress on a low end, base model iMac.

There isn’t much you can do about your situation.


Here's the BIG issues with all, but the topped out, 2013-2015, slimline, 21 inch screen iMac.

The 2013-2015 slim profile 21 inch screen iMacs that Apple had offered are, IMSO, "downgrades" from the previous 2009 thru 2011 21 inch iMacs models.

The 2013-2015 slim profile, "slimline", 21 inch screen model iMac are, basically, sealed up, glued up, basic computing appliances, now, with only the "top of the line" with all the top options (top i7 CPU, 16 GBs of RAM, 256 or 512 SSD) being the only viable option to use as a standard to medium professional grade, work related, iMac with just enough power for professional and creative use.

There is nothing in the 2013-2015, 21 inch screen iMacs the is user upgradeable OR serviceable, any longer.


Slower laptop 5400 RPM hard drive/fusion drives, limited RAM (the 2010, 2011 i5 CPU models and higher could take up to 32 GBs of RAM).

These 2012-2015 slimline 21 inch screen iMacs are limited to just 16 GBs of RAM.


Slower 5400 RPM laptop standard/style hard drives are 33% slower than the equivalent storage size in a "desktop standard" 7200 RPM hard drive.

This means 33% slower read/writes to the drive, in addition to other system delays.


Also, like laptop models, these older 2013-2015, 21 inch screen iMacs no longer use dedicated, discreet and independent GPUs.

These older slimline 21 inch screen iMacs use the "so-called" integrated (soldered) Intel Iris ”Pro" GPUs, now!

Meaning that in any of the newer 21 inch screen model iMacs, if you get one with the max 16 GBs of RAM, a little bit to quite a bit of that installed RAM is being used for the GPU's VRAM!

Meaning that the GPUs in these newer 21 inch screen model iMacs is stealing away physical RAM, for use by the GPU, for the GPU's VRAM, that could be needed for any other possible RAM intensive tasks depending on the apps being used or what combination of apps is being used together.

The GPU will automatically steal whatever the amount of physical RAM the the GPU needs for any type GPU related task.


This would not be as big an issue if you could install more than 16 GBs (which there is no way to do this in these 2013-2015 , 21 inch screen iMacs as Apple has soldered every single component to the logic board).


The 2012-2015 baseline 21 inch screen iMac models only come with 8 GBs of RAM standard.

New versions of the Mac OS need a base MINIMUM RAM of 8 GBs, now.

So, 8 GBs of RAM is really not enough RAM to run both the OS AND any additional applications.

Especially the type of applications that are SERIOUS hardware resource intensive!


To get a better performing iMac, now, you would have to spend the money for all of the top end options for the new 21 inch screen model iMacs to ensure better longevity and "futureproofing"


OR


You would really have to graduate up to the more expensive 27 inch screen iMacs that still have 7200 RPM hard drives/fusion drives, independent GPUs and user installable/upgradeable RAM.



I am NOT a big fan of these 2013-2015, 21 inch screen iMac models, at all!

Other than a top shelf version 21 inch screen model, the other 21 inch screen model options are like a Mac Mini with a screen, now, or like a laptop/desktop hybrid, sealed up appliance.



This is the only way to make these newer slimline, 21 inch screen iMacs faster.


To greatly improve the speed and performance of your 2013, 21 inch screen iMac, you are going to have to spend some significant more cash for this to happen.



My solution is to go the less difficult plug and play (somewhat) route.

Purchase an externally enclosed USB 3.0 or Thunderbolt connected large capacity SSD.

Format the SSD for Mac OS extended (journaled) with GUID partition scheme and then purchase data cloning software, like Bombich Software's CarbonCopyCloner or Shirt Pocket's SuperDuper to make a bootable clone of your current system to the SSD and boot and run your iMac, exclusively from the externally connected and enclosed SSD.

Your iMac will run A WHOLE LOT FASTER from an externally connected and enclosed SSD!

You can either opt to use your internal iMac's hard drive to just store data OR purchase, yet, another external USB 3.0 or Thunderbolt connected 7200 RPM mechanically spinning hard drive to use as your primary data storage and data backup.

If you are from the U.S., here is a good Mac/Apple source for external SSDs and standard 7200 RPM hard drives here.


https://eshop.macsales.com/shop/external-storage


You can call them to speak with a sales/technical rep or contact by email


RAM and GPU are still problematic in these 2013-2015, 21 inch screen iMacs, though.

There is nothing to be done with that!


You SHOULD BE running Photoshop alone with no other background apps running, when working exclusively and extensively with Photoshop.

You maybe able to run InDesign and Illustrator together (assuming that the file sizes in InDesign/Illustrator are unusually large) and if using Quark Xpress, you need to be just running one page layout app at a time with Adobe Illustrator

With only 8 GBs of RAM and with the iMac and the Mac OS using your iMac's available RAM, you really need to be using only one graphics app at a time when working exclusively in one of these graphics/drawing/photo/painting apps.


You’re iMac simply is underpowered for what you are using it for. Plain and simple.



Good Luck!

99 replies

Jul 18, 2016 3:10 PM in response to Adam Brodsley

What are the specs of these 27 inch screen iMacs?

Have you installed any unnecessary anti virus software?

16 GBs of RAM should have been sufficient. Adding extra RAM is always a plus and won't hurt.

El Capitán, on its own needs up to 8 GBs of RAM leaving an additonal 8 GBs of RAM for running applications.

If you are trying to run the entire Adobe CS suite (have active or running in the background, InDesign, Illustrator or Photoshop or any other Adobe apps concurrently), on the remaining 8 GBs of RAM, you may need to cut back on running all of these at once.

Photoshop is best left running on its own without any other real resource hungry apps runningin the background.

I have an an older iMac with 16 GBs of RAM (running Adobe CS4) and I always run Photoshop by itself when I need it .

You can easily have InDesign and Illustrator up and running together, but Photoshop is usually the most computer resource hungry of all the Adobe apps.

You may be able to run Photoshop with a Font Manager, Apple Mail and, maybe, a web browser open, but I wouldn't run Photoshop with any thing else resource intensive running in the background.

Again, adding more RAM may make this situation better.

Correct and reliable Mac RAM can ONLY be purchased from online Mac RAM sources Crucial memory(crucial.com) or OWC (macsales.com).

Jul 18, 2016 4:59 PM in response to Adam Brodsley

It could be the GPU requirements for Adobe apps is greater than the GPUs installed in your 2015 iMac?


It would help us to help you if we could have some more technical info about your new iMac.

If you like, please go ahead and download, install and run Etrecheck.

Etrecheck was developed as a simple Mac diagnostic report tool by a regular Apple Support forum user and technical support contributor named Etresoft.

Etrecheck is a small, unobstrusive app that compiles a static snapshot of your entire Mac hardware system and installed software.

This is a free app that has been honestly created to provided help in diagnosing issues with Macs running the new OS X 10.9 Mavericks.

It is not malware and can be safely downloaded and installed onto your Mac. It does not generate any personal data.


http://www.etresoft.com/etrecheck


Copy/paste and post its report here in another reply thread so that we have a complete profile of your Mac's hardware and installed software so we can all help with your Mac performance issues.


Thank You.

Aug 16, 2016 5:59 AM in response to Allan Eckert

Hi

I am also suffering from a very slow iMac that was only purchased just over 3 months ago.

Please find below a copy of the diagnostic run through Etrecheck.

Can you help please?


EtreCheck version: 3.0.1 (304)

Report generated 2016-08-16 22:43:29

Download EtreCheck from https://etrecheck.com

Runtime 3:39

Performance: Good


Click the [Support] links for help with non-Apple products.

Click the [Details] links for more information about that line.


Problem: Computer is too slow

Description:

it takes a long time to open from sleep mode

it is slow to open pages

it beachballs often


Hardware Information:

iMac (Retina 5K, 27-inch, Late 2015)

[Technical Specifications] - [User Guide] - [Warranty & Service]

iMac - model: iMac17,1

1 3.2 GHz Intel Core i5 CPU: 4-core

8 GB RAM Upgradeable - [Instructions]

BANK 0/DIMM0

4 GB DDR3 1867 MHz ok

BANK 0/DIMM1

Empty

BANK 1/DIMM0

4 GB DDR3 1867 MHz ok

BANK 1/DIMM1

Empty

Bluetooth: Good - Handoff/Airdrop2 supported

Wireless: en1: 802.11 a/b/g/n/ac


Video Information:

AMD Radeon R9 M390 - VRAM: 2048 MB

iMac 5120 x 2880


System Software:

OS X El Capitan 10.11.6 (15G31) - Time since boot: about 20 days


Disk Information:

APPLE HDD ST1000DM003 disk1 : (1 TB) (Rotational)

EFI (disk1s1) <not mounted> : 210 MB

Recovery HD (disk1s3) <not mounted> [Recovery]: 650 MB

Macintosh HD (disk2) / : 1.02 TB (775.34 GB free)

Core Storage: disk0s2 23.55 GB Online

Core Storage: disk1s2 999.35 GB Online


APPLE SSD AP0032H disk0 : (24 GB) (Solid State - TRIM: Yes)

EFI (disk0s1) <not mounted> : 315 MB

Boot OS X (disk0s3) <not mounted> : 134 MB

Macintosh HD (disk2) / : 1.02 TB (775.34 GB free)

Core Storage: disk0s2 23.55 GB Online

Core Storage: disk1s2 999.35 GB Online


USB Information:

Broadcom Corp. Bluetooth USB Host Controller

Apple Inc. FaceTime HD Camera (Built-in)


Thunderbolt Information:

Apple Inc. thunderbolt_bus


Gatekeeper:

Mac App Store and identified developers


Kernel Extensions:

/Library/Extensions

[loaded] com.sophos.kext.sav (9.4.52 - SDK 10.9 - 2016-08-02) [Support]

[loaded] com.sophos.nke.swi (9.4.52 - SDK 10.9 - 2016-08-02) [Support]


Startup Items:

HWNetMgr: Path: /Library/StartupItems/HWNetMgr

HWPortDetect: Path: /Library/StartupItems/HWPortDetect

Startup items are obsolete in OS X Yosemite


System Launch Agents:

[not loaded] 7 Apple tasks

[loaded] 142 Apple tasks

[running] 81 Apple tasks

[killed] 8 Apple tasks

8 processes killed due to insufficient RAM


System Launch Daemons:

[not loaded] 43 Apple tasks

[loaded] 139 Apple tasks

[running] 98 Apple tasks

[killed] 10 Apple tasks

10 processes killed due to insufficient RAM


Launch Agents:

[not loaded] com.adobe.AAM.Updater-1.0.plist (2016-06-11) [Support]

[failed] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a2 3d420d.plist (2016-07-20)

[loaded] com.google.keystone.agent.plist (2016-07-12)

[running] com.oracle.java.Java-Updater.plist (2016-04-30)

[running] com.sophos.uiserver.plist (2016-04-30)


Launch Daemons:

[loaded] com.adobe.ARMDC.Communicator.plist (2016-07-20) [Support]

[loaded] com.adobe.ARMDC.SMJobBlessHelper.plist (2016-07-20) [Support]

[running] com.adobe.agsservice.plist (2016-08-15) [Support]

[loaded] com.adobe.fpsaud.plist (2016-06-29)

[loaded] com.adobe.versioncueCS4.plist (2010-06-27)

[loaded] com.google.keystone.daemon.plist (2016-07-12)

[loaded] com.macpaw.CleanMyMac2.Agent.plist (2014-11-08) [Support]

[loaded] com.macpaw.CleanMyMac3.Agent.plist (2015-07-17) [Support]

[loaded] com.microsoft.autoupdate.helpertool.plist (2016-01-24) - /Library/PrivilegedHelperTools/com.microsoft.autoupdate.helpertool: Executable not found!

[loaded] com.microsoft.office.licensing.helper.plist (2010-08-25)

[loaded] com.microsoft.office.licensingV2.helper.plist (2015-09-11) [Support]

[loaded] com.oracle.java.Helper-Tool.plist (2016-04-30)

[running] com.sec.faxdb.plist (2011-12-12)

[loaded] com.sibelius.sari.plist (2010-06-27)

[running] com.sophos.common.servicemanager.plist (2016-04-30)


User Launch Agents:

[running] com.google.Chrome.framework.plist (2016-07-27)


User Login Items:

iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

Dropbox Application (/Applications/Dropbox.app)

AdobeResourceSynchronizer Application Hidden (/Applications/Adobe Acrobat DC/Adobe Acrobat.app/Contents/Helpers/AdobeResourceSynchronizer.app)

AdobeResourceSynchronizer Application Hidden (/Applications/Adobe Acrobat Reader DC.app/Contents/Helpers/AdobeResourceSynchronizer.app)

Google Drive Application (/Applications/Google Drive.app)

InstUtilLaunch Application (/Library/Printers/Brother/Utilities/InstallUtility.app/Contents/Resources/Inst UtilLaunch.app)


Internet Plug-ins:

Google Earth Web Plug-in: 7.1 (2016-04-30) [Support]

Default Browser: 601 - SDK 10.11 (2016-07-27)

DYMO Safari Addin: Unknown (2016-04-30) [Support]

OfficeLiveBrowserPlugin: 12.3.3 (2016-04-30) [Support]

Unity Web Player: UnityPlayer version 4.0.1f1 (2016-04-30) [Support]

AdobeAAMDetect: AdobeAAMDetect 2.0.0.0 - SDK 10.7 (2016-04-30) [Support]

FlashPlayer-10.6: 22.0.0.209 - SDK 10.9 (2016-08-10) [Support]

AdobePDFViewerNPAPI: 15.016.20045 - SDK 10.11 (2016-06-08) [Support]

Silverlight: 5.1.41212.0 - SDK 10.6 (2016-06-14) [Support]

QuickTime Plugin: 7.7.3 (2016-07-27)

Flash Player: 22.0.0.209 - SDK 10.9 (2016-08-10) [Support]

iPhotoPhotocast: 7.0 (2016-04-30)

SharePointBrowserPlugin: 14.6.1 - SDK 10.6 (2016-04-30) [Support]

AdobePDFViewer: 15.016.20045 - SDK 10.11 (2016-06-08) [Support]

Scorch: Unknown - SDK 10.2 (2016-04-30) [Support]

JavaAppletPlugin: Java 8 Update 91 build 14 (2016-06-14) Check version


Safari Extensions:

Dyslexie for Safari - ftollenaar (2016-06-08)


3rd Party Preference Panes:

Flash Player (2016-06-29) [Support]

Java (2016-06-14) [Support]

TechTool Protection (2015-07-17) [Support]


Time Machine:

Skip System Files: NO

Mobile backups: OFF

Auto backup: YES

Volumes being backed up:

Macintosh HD: Disk size: 1.02 TB Disk used: 246.65 GB

Destinations:

Public [Network]

Total size: 1.96 TB

Total number of backups: 19

Oldest backup: 3/08/2016, 11:03 PM

Last backup: 16/08/2016, 10:37 PM

Size of backup disk: Adequate

Backup size 1.96 TB > (Disk used 246.65 GB X 3)


Top Processes by CPU:

16% kernel_task

2% diskimages-helper(3)

1% WindowServer

0% Google Chrome

0% Mail


Top Processes by Memory:

1014 MB kernel_task

434 MB softwareupdated

385 MB com.apple.WebKit.WebContent(6)

360 MB Google Chrome Helper(4)

319 MB Safari


Virtual Memory Information:

219 MB Free RAM

7.78 GB Used RAM (1.29 GB Cached)

1.73 GB Swap Used

Aug 16, 2016 7:15 AM in response to Sannos71

Disable the Techtool Protection.

Use another browser, like either Safari or Mozilla Firefox, instead of Google Chrome.

Add more RAM.

OS X needs up to 8 GBs, now.

Your model iMac can use, at least, 16 GBs of RAM.

Correct and reliable Mac RAM can ONLY be purchased from online Mac RAM sources Crucial memory (crucial.com) or OWC (macsales.com).


Good Luck!

Nov 21, 2016 10:25 AM in response to Denmarkujin

hello bro! sorry for replying this late because what I'm about to say now has been tried out by me too, so I'm completely sure that it will work on your system too!

so, I own a 21.5" 4k imac running on 3.1Ghz Intel core i5 with 8gb ram and a terribly slow 1Tb 5400rpm hdd . . . . so all I did was buying self an SSD which was Samsung 850 EVO 500GB indeed and an Enclosure to set the 2.5" 7mm thin ssd in place and for the Enclosure's purpose, I chose inateck 2.5" SATA Enclosure and then finally I put the ssd into the enclosure and plugged it into my imac via the USB 3.0 port and downloaded the "carbon copy cloner" which I further used for cloning the existing hdd to my newly bought ssd. . . . finally, I went to system preferences on my imac and clicked on "startup disk" and set the new cloned ssd as my current drive and then clicked restart and then "Tadaaaaaaaa" . The boot up was speedily done as well as I loaded a couple of apps and they too were speedily opened unlike the sluggish response times of the previous 5400rpm drive! I hope this information has helped you!

Nov 21, 2016 5:25 PM in response to gaurang.ghare

Again,

It would be nice if you would read the original post and report before you post.

The OP has a 27 inch screen iMac and ALL 27 inch screen iMac have the desktop standard 7200 RPM hard drive.

No 5400 RPM hard drives in 27 inch screen model iMacs.

Plus, the ARE MANY OTHER THINGS THAT CAN SLOW DOWN a Mac's performance besides a slower spinning hard drive.

Please be more careful about where you need to post the helpful tip.


Thanks.

Dec 7, 2016 5:15 AM in response to Denmarkujin

I also have a super slow iMac late 2015, here are my results


EtreCheck version: 3.1.5 (343)

Report generated 2016-12-07 07:10:35

Download EtreCheck from https://etrecheck.com

Runtime 3:58

Performance: Good


Click the [Support] links for help with non-Apple products.

Click the [Details] links for more information about that line.


Problem: Beachballing


Hardware Information:

iMac (21.5-inch, Late 2015)

[Technical Specifications] - [User Guide] - [Warranty & Service]

iMac - model: iMac16,2

1 2.8 GHz Intel Core i5 (i5-5575R) CPU: 4-core

8 GB RAM Not upgradeable

BANK 0/DIMM0

4 GB DDR3 1867 MHz ok

BANK 1/DIMM0

4 GB DDR3 1867 MHz ok

Bluetooth: Good - Handoff/Airdrop2 supported

Wireless: en1: 802.11 a/b/g/n/ac


Video Information:

Intel Iris Pro Graphics 6200

iMac 1920 x 1080


System Software:

macOS Sierra 10.12.1 (16B2555) - Time since boot: about 6 days


Disk Information:

APPLE HDD HTS541010A9E662 disk0 : (1 TB) (Rotational)

[Show SMART report]

EFI (disk0s1) <not mounted> : 210 MB

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

Macintosh HD (disk1) / [Startup]: 998.98 GB (542.77 GB free)

Core Storage: disk0s2 999.35 GB Online


USB Information:

Western Digital My Passport 07B8

Broadcom Corp. Bluetooth USB Host Controller

Apple Inc. FaceTime HD Camera (Built-in)

EPSON EPSON XP-610 Series

Western Digital My Passport 07B8

Fitbit Inc. Fitbit Base Station


Thunderbolt Information:

Apple Inc. thunderbolt_bus


Gatekeeper:

Mac App Store and identified developers


System Launch Agents:

[not loaded] 7 Apple tasks

[loaded] 155 Apple tasks

[running] 109 Apple tasks


System Launch Daemons:

[not loaded] 41 Apple tasks

[loaded] 149 Apple tasks

[running] 113 Apple tasks


Launch Agents:

[loaded] com.adobe.CS4ServiceManager.plist (2015-11-13) [Support]

[loaded] com.carbonite.launchd.carbonitealerts.plist (2016-12-07) [Support]

[running] com.carbonite.launchd.carbonitestatus.plist (2016-03-09) [Support]

[failed] com.randmcnally.rmdock.plist (2011-09-29) [Support] - /Applications/RNDDock/RMDock2: Executable not found!

[loaded] org.macosforge.xquartz.startx.plist (2014-08-11) [Support]


Launch Daemons:

[loaded] com.adobe.fpsaud.plist (2016-10-25) [Support]

[loaded] com.adobe.versioncueCS4.plist (2015-11-13) [Support]

[running] com.carbonite.launchd.carbonitedaemon.plist (2016-03-09) [Support]

[running] com.fitbit.galileod.plist (2015-10-30) [Support]

[loaded] com.malwarebytes.HelperTool.plist (2016-11-30) [Support]

[loaded] com.westerndigital.ErasePrivilegedHelper.plist (2016-06-04) [Support]

[loaded] org.macosforge.xquartz.privileged_startx.plist (2014-08-11) [Support]


User Login Items:

iTunesHelper Application (2016-11-03)

(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

Fitbit Connect Menubar Helper Application (2016-01-26)

(/Applications/Fitbit Connect.app/Contents/MacOS/Fitbit Connect Menubar Helper.app)

WDDriveUtilityHelper Application

(/Applications/WD Drive Utilities.app/Contents/WDDriveUtilityHelper.app)

com.adobe.versioncueCS4.monitor.plist MachInit

(/etc/mach_init_per_user.d/com.adobe.versioncueCS4.monitor.plist)

Mach Init items are deprecated


Internet Plug-ins:

FlashPlayer-10.6: 23.0.0.207 - SDK 10.9 (2016-11-30) [Support]

QuickTime Plugin: 7.7.3 (2016-10-25)

Flash Player: 23.0.0.207 - SDK 10.9 (2016-11-30) [Support]

JavaAppletPlugin: 15.0.1 - SDK 10.7 (2015-07-19) Check version


User internet Plug-ins:

ZoomUsPlugIn: 3.5.48445.0422 - SDK 10.11 (2016-05-08) [Support]


3rd Party Preference Panes:

Adobe Version Cue CS4 (2015-11-13) [Support]

Carbonite (2016-03-09) [Support]

Flash Player (2016-10-25) [Support]


Time Machine:

Skip System Files: NO

Mobile backups: OFF

Auto backup: YES

Volumes being backed up:

Macintosh HD: Disk size: 998.98 GB Disk used: 456.21 GB

Destinations:

Time Machine [Local]

Total size: 999.83 GB

Total number of backups: 29

Oldest backup: 11/11/16, 3:31 PM

Last backup: 12/7/16, 6:40 AM

Size of backup disk: Too small

Backup size 999.83 GB < (Disk used 456.21 GB X 3)


Top Processes by CPU:

97% CarboniteDaemon

3% WindowServer

3% kernel_task

2% fontd

0% hidd


Top Processes by Memory:

1.11 GB kernel_task

385 MB com.apple.WebKit.WebContent(3)

279 MB Adobe InDesign CS4

246 MB Mail

197 MB mdworker(14)


Virtual Memory Information:

2.01 GB Available RAM

345 MB Free RAM

5.99 GB Used RAM

1.67 GB Cached files

13 MB Swap Used


Diagnostics Information:

Dec 4, 2016, 09:32:16 AM /Library/Logs/DiagnosticReports/rastertoescpII_2016-12-04-093216_[redacted].cra sh

/Library/Printers/EPSON/InkjetPrinter2/Filter/rastertoescpII.app/Contents/MacOS /rastertoescpII

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My brand new iMac "Late 2015" is SO SLOW. Why?

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