I also have this problem with my mid 2015 iMac problem. Mid 2015 iMac 27in retina 5K 3.3 GHz I5 running so slow that it is becoming unusable. Getting worse over 4-8 weeks. Also starting to be sluggish with Internet. I use and depend heavily on Word Microsoft 2016 for Mac and it beachballs frequently requiring restarts. After several weeks of this poor performance I upgraded my RAM from 8 to 32 MHz:
I’ve tried to problem solve with community solutions without success. I am not any kind of power user and this is seriously interfering with my work. I'm stuck! Ran EtreCheck with the following report and please help:
EtreCheck version: 3.4.6 (460)
Report generated 2018-01-12 19:47:11
Download EtreCheck from https://etrecheck.com
Runtime: 2:46
Performance: Excellent
Click the [Lookup] links for more information from Apple Support Communities.
Click the [Details] links for more information about that line.
Problem: Apps are crashing
Description:
Mid 2015 iMac 27in retina 5K 3.3 GHz I5 running Very slow and getting worse over 4-8 weeks. Slow internet, Microsoft 2016 for Mac freezes frequently. After several weeks of this I upgraded my RAM from 8 to 32 MHz. I’ve tried to problem solve with community solutions without success. It is seriously interfering with my work
Hardware Information:ⓘ
iMac (Retina 5K, 27-inch, Mid 2015)
[Technical Specifications] - [User Guide] - [Warranty & Service]
iMac - model: iMac15,1
1 3.3 GHz Intel Core i5 (i5-4590) CPU: 4-core
24 GB RAM Upgradeable - [Instructions]
BANK 0/DIMM0
4 GB DDR3 1600 MHz ok
BANK 1/DIMM0
8 GB DDR3 1600 MHz ok
BANK 0/DIMM1
4 GB DDR3 1600 MHz ok
BANK 1/DIMM1
8 GB DDR3 1600 MHz ok
Handoff/Airdrop2: supported
Wireless: en1: 802.11 a/b/g/n/ac
iCloud Quota: 26.03 GB available
Video Information:ⓘ
AMD Radeon R9 M290 - VRAM: 2 GB
iMac 5120 x 2880
Disk Information:ⓘ
APPLE HDD ST1000DM003 disk0: (1 TB) (Rotational)
[Show SMART report]
EFI (disk0s1 - MS-DOS FAT32) <not mounted> [EFI]: 210 MB
Macintosh HD (disk0s2 - Journaled HFS+) / [Startup]: 999.35 GB (913.61 GB free)
Recovery HD (disk0s3 - HFS+) <not mounted> [Recovery]: 650 MB
USB Information:ⓘ
USB30Bus
Western Digital My Passport 07B8
My Passport 07B8 disk1: (1 TB)
EFI (disk1s1 - MS-DOS FAT32) <not mounted> [EFI]: 210 MB
My Passport for Mac (disk1s2 - Journaled HFS+) /Volumes/My Passport for Mac : 999.83 GB (328.44 GB free)
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. FaceTime HD Camera (Built-in)
SanDisk Cruzer Glide
Cruzer Glide disk2: (15.63 GB)
GHBOCK (disk2s1 - MS-DOS FAT32) /Volumes/GHBOCK : 15.63 GB (15.31 GB free)
Thunderbolt Information:ⓘ
Apple Inc. thunderbolt_bus
System Software:ⓘ
macOS High Sierra 10.13.2 (17C88) - Time since boot: about 4 days
Configuration files:ⓘ
System Integrity Protection status: disabled
Gatekeeper:ⓘ
Mac App Store and identified developers
Kernel Extensions:ⓘ
/Library/Extensions
[loaded] com.symantec.SymXIPS (8.1 - SDK 10.10) [Lookup]
[loaded] com.symantec.internetSecurity.kext (7.6.1 - SDK 10.11) [Lookup]
[loaded] com.symantec.ips.kext (7.6.1 - SDK 10.11) [Lookup]
[loaded] com.symantec.nfm.kext (7.6.1 - SDK 10.11) [Lookup]
System Launch Agents:ⓘ
[not loaded] 10 Apple tasks
[loaded] 160 Apple tasks
[running] 118 Apple tasks
[killed] 2 Apple tasks
2 processes killed due to insufficient RAM
System Launch Daemons:ⓘ
[not loaded] 37 Apple tasks
[loaded] 175 Apple tasks
[running] 113 Apple tasks
[killed] 5 Apple tasks
5 processes killed due to insufficient RAM
Launch Agents:ⓘ
[not loaded] com.adobe.AAM.Updater-1.0.plist (Adobe Systems, Inc. - installed 2017-11-17) [Lookup]
[running] com.epson.Epson_Low_Ink_Reminder.launcher.plist (EPSON - installed 2017-06-12) [Lookup]
[loaded] com.epson.esua.launcher.plist (Seiko Epson Corporation - installed 2017-11-18) [Lookup]
[running] com.epson.eventmanager.agent.plist (Seiko Epson Corporation - installed 2017-07-21) [Lookup]
[running] com.epson.scannermonitor.plist (Seiko Epson Corporation - installed 2017-07-21) [Lookup]
[loaded] com.microsoft.update.agent.plist (Microsoft Corporation - installed 2018-01-08) [Lookup]
[running] com.symantec.uiagent.application.NFM.plist (Symantec - installed 2017-11-13) [Lookup]
Launch Daemons:ⓘ
[running] com.adobe.ARM.[...].plist (Adobe Systems, Inc. - installed 2017-11-07) [Lookup]
[running] com.adobe.agsservice.plist (Adobe Systems, Inc. - installed 2017-11-07) [Lookup]
[loaded] com.adobe.fpsaud.plist (Adobe Systems, Inc. - installed 2017-12-14) [Lookup]
[loaded] com.macpaw.CleanMyMac3.Agent.plist (MacPaw Inc. - installed 2017-11-06) [Lookup]
[loaded] com.microsoft.autoupdate.helper.plist (Microsoft Corporation - installed 2018-01-08) [Lookup]
[loaded] com.microsoft.office.licensing.helper.plist (? 6d8cb30e 7ca9944 - installed 2015-06-04) [Lookup]
[loaded] com.microsoft.office.licensingV2.helper.plist (Microsoft Corporation - installed 2017-12-05) [Lookup]
[running] com.sonos.SonosLibraryServer.plist (Sonos, Inc. - installed 2017-11-17) [Lookup]
[loaded] com.symantec.SymLUHelper.NFM.plist (Symantec - installed 2017-11-09) [Lookup]
[loaded] com.symantec.UninstallerToolHelper.NFM.plist (Symantec - installed 2017-11-09) [Lookup]
[running] com.symantec.deepsight-extractor.NFM.plist (Symantec - installed 2017-11-09) [Lookup]
[failed] com.symantec.liveupdate.daemon.NFM.plist (Symantec - installed 2017-11-09) [Lookup]
[loaded] com.symantec.nortonutilities.daemon.plist (Symantec - installed 2017-11-09) [Lookup]
[running] com.symantec.sharedsettings.NFM.plist (Symantec - installed 2017-11-09) [Lookup]
[running] com.symantec.symdaemon.NFM.plist (Symantec - installed 2017-11-09) [Lookup]
[loaded] com.symantec.symqual.detail.NFM.plist (Symantec - installed 2017-11-09) [Lookup]
[loaded] com.symantec.symqual.panicreporter.NFM.plist (Symantec - installed 2017-11-09) [Lookup]
[loaded] com.symantec.symqual.submit.NFM.plist (Symantec - installed 2017-11-09) [Lookup]
User Launch Agents:ⓘ
[loaded] com.adobe.AAM.Updater-1.0.plist (Adobe Systems, Inc. - installed 2017-11-07) [Lookup]
[loaded] com.adobe.ARM.[...].plist (? 881a4a1c f027a735 - installed 2017-11-07) [Lookup]
[loaded] com.macpaw.CleanMyMac3.Scheduler.plist (MacPaw Inc. - installed 2017-11-06) [Lookup]
[running] com.spotify.webhelper.plist (Spotify - installed 2018-01-11) [Lookup]
User Login Items:ⓘ
CleanMyMac 3 Menu Application (MacPaw Inc. - installed 2017-12-26)
(/Applications/CleanMyMac 3.app/Contents/MacOS/CleanMyMac 3 Menu.app)
Internet Plug-ins:ⓘ
AdobeAAMDetect: AdobeAAMDetect 1.0.0.0 (installed 2017-11-07) [Lookup]
FlashPlayer-10.6: 28.0.0.137 (installed 2018-01-10) [Lookup]
QuickTime Plugin: 7.7.3 (installed 2017-12-30)
AdobePDFViewerNPAPI: 11.0.22 (installed 2017-12-04) [Lookup]
AdobePDFViewer: 11.0.22 (installed 2017-11-07) [Lookup]
Flash Player: 28.0.0.137 (installed 2018-01-10) [Lookup]
SharePointBrowserPlugin: 14.5.2 (installed 2017-06-07) [Lookup]
Safari Extensions:ⓘ
[enabled] Norton Identity Safe - Symantec Corporation - https://www.norton.com (installed 2017-11-21)
[enabled] Norton Safe Web - Symantec Corporation - https://www.norton.com (installed 2017-12-21)
3rd Party Preference Panes:ⓘ
Flash Player (installed 2017-12-14) [Lookup]
Time Machine:ⓘ
Skip System Files: NO
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 999.35 GB Disk used: 85.74 GB
Destinations:
My Passport for Mac [Local]
Total size: 999.83 GB
Total number of backups: 153
Oldest backup: 9/17/15, 4:04 PM
Last backup: 1/12/18, 6:48 PM
Size of backup disk: Adequate
Backup size 999.83 GB > (Disk used 85.74 GB X 3)
Top Processes by CPU:ⓘ
4% WindowServer
4% kernel_task
4% backupd
3% mds
2% mdworker
Top Processes by Memory:ⓘ
1.71 GB kernel_task
374 MB iconservicesagent
332 MB com.apple.WebKit.WebContent
277 MB mds_stores
273 MB EndNote X8
Top Processes by Network Use:ⓘ
Input Output Process name
27 MB 122 KB Mail
6 MB 811 KB mDNSResponder
174 KB 42 KB netbiosd
18 KB 9 KB apsd
7 KB 2 KB cloudd
Top Processes by Energy Use:ⓘ
7.98 mds_stores
7.36 backupd
6.02 mds
5.48 WindowServer
Virtual Memory Information:ⓘ
16.22 GB Available RAM
10.39 GB Free RAM
7.78 GB Used RAM
5.82 GB Cached files
48 MB Swap Used
Software installs (last 30 days):ⓘ
CleanMyDrive 2: 2.1.10 (installed 2017-12-28)
CleanMyDrive 2: 2.1.11 (installed 2018-01-03)
Microsoft Office 2016 for Mac: (installed 2018-01-07)
Microsoft AutoUpdate: (installed 2018-01-08)
Adobe Flash Player: (installed 2018-01-10)
Install information may not be complete.
Diagnostics Events (last 3 days for minor events):ⓘ
2018-01-12 19:21:36 Microsoft Word.app High CPU use [Open] [Details]
2018-01-12 19:18:12 EndNote X8.app Crash [Open]