imac crushing and working very slow

imac, bought in 2014, has 24 gb ram. lately is crushes to much and working very slow

I ran EtreCheck. Here is the report:

EtreCheck version: 4.1.3 (4A188)

Report generated: 2018-03-25 14:23:57

Download EtreCheck from https://etrecheck.com

Runtime: 5:10

Performance: Below Average

Problem: Beachballing

Major Issues: None

Minor Issues:

These issues do not need immediate attention but they may indicate future problems.

Heavy RAM usage - This machine is using a large amount of RAM.

Clean up - There are orphan files that could be removed.

Unsigned files - There is unsigned software installed. They appear to be legitimate but should be reviewed.

Low performance - EtreCheck report took over 5 minutes to run. This is unusual.

32-bit Apps - This machine has 32-bits apps that may have problems in the future.

Hardware Information:

iMac (27-inch, Late 2013)

iMac Model: iMac14,2

1 3.2 GHz Intel Core i5 (i5-4570) CPU: 4-core

24 GB RAM Upgradeable

BANK 0/DIMM0

4 GB DDR3 1600 ok

BANK 1/DIMM0

4 GB DDR3 1600 ok

BANK 0/DIMM1

8 GB DDR3 1600 ok

BANK 1/DIMM1

8 GB DDR3 1600 ok

Video Information:

NVIDIA GeForce GT 755M - VRAM: 1 GB

iMac 2560 x 1440

Drives:

disk0 - APPLE HDD ST1000DM003 1.00 TB (Mechanical)

Internal SATA 3 Gigabit Serial ATA

disk0s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk0s2 - Macintosh HD (Journaled HFS+) 999.35 GB

disk0s3 - Recovery HD (Journaled HFS+) [Recovery] 650 MB

Mounted Volumes:

disk0s2 - Macintosh HD 999.35 GB (338.89 GB free)

Journaled HFS+

Mount point: /

Network:

Interface Bluetooth-Modem: Bluetooth DUN

Interface en0: Ethernet

One IPv4 address

Interface en1: Wi-Fi

802.11 a/b/g/n/ac

One IPv4 address

Interface en5: iPhone

Interface en4: Bluetooth PAN

One IPv4 address

Interface bridge0: Thunderbolt Bridge

iCloud Quota: 5.01 GB available

System Software:

macOS High Sierra 10.13.3 (17D47)

Time since boot: Less than an hour

System Load: 2.62 (1 min ago) 1.75 (5 min ago) 0.89 (15 min ago)

Security:

Unsigned Files:

Launchd: /Library/LaunchDaemons/com.microsoft.office.licensing.helper.plist

Executable: /Library/PrivilegedHelperTools/com.microsoft.office.licensing.helper

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/com.adobe.SwitchBoard.plist

Executable: /Library/Application Support/Adobe/SwitchBoard/SwitchBoard.app/Contents/MacOS/launch.switchboard

Details: Exact match found in the whitelist - probably OK

32-bit Applications:

Kernel Extensions:

/System/Library/Extensions

[Not Loaded] Pen Tablet.kext (Pen Tablet 5.3.3-3 - SDK 10.8)

System Launch Agents:

System Launch Daemons:

Launch Agents:

Launch Daemons:

User Launch Agents:

User Login Items:

Dropbox Application (Dropbox, Inc.

(/Applications/Dropbox.app)

SkyFonts Application

(/Applications/SkyFonts/SkyFonts.app)

iTunesHelper Application (Apple, Inc. - installed 2018-01-24)

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

Monotype SkyFontsHelper SMLoginItem (Monotype Imaging - installed 2017-12-12)

(/Applications/SkyFonts/SkyFonts.app/Contents/Library/LoginItems/Monotype SkyFontsHelper.app)

CIJSUAgent SMLoginItem (Canon Inc. - installed 2017-08-07)

(/Applications/Canon Utilities/IJ Scan Utility/Canon IJ Scan Utility2.app/Contents/Library/LoginItems/CIJSUAgent.app)

PhotoStreamAgent SMLoginItem (Mac App Store - installed 2015-03-22)

(/Applications/iPhoto.app/Contents/Library/LoginItems/PhotoStreamAgent.app)

Internet Plug-ins:

JavaAppletPlugin: 15.0.1 (installed 2014-02-02)

WacomNetscape: 2.1.0-1 (installed 2013-09-03)

AdobeExManDetect: AdobeExManDetect 1.1.0.0 (installed 2014-02-17)

Flip4Mac WMV Plugin: 3.2.0.16 (installed 2014-04-28)

WacomTabletPlugin: WacomTabletPlugin 2.1.0.2 (installed 2013-09-03)

AdobeAAMDetect: 3.0.0.0 (installed 2018-02-19)

AdobePDFViewerNPAPI: 17.012.20098 (installed 2018-03-05)

FlashPlayer-10.6: 29.0.0.113 (installed 2018-03-13)

QuickTime Plugin: 7.7.3 (installed 2018-01-19)

Flash Player: 29.0.0.113 (installed 2018-03-13)

SharePointBrowserPlugin: 14.3.9 (installed 2014-01-30)

AdobePDFViewer: 18.011.20038 (installed 2018-03-05)

EPPEX Plugin: 10.0 (installed 2016-05-23)

MeetingJoinPlugin: Unknown (installed 2014-01-30)

3rd Party Preference Panes:

Flash Player (installed 2018-02-24)

Flip4Mac WMV (installed 2013-03-29)

Time Machine:

Skip System Files: No

Mobile backups:

Auto backup: Yes

Volumes being backed up:

Macintosh HD: Disk size: 999.35 GB - Disk used: 660.46 GB

Destinations:

O********T [Local] (Last used)

Total size: 2.00 TB

Total number of backups: 0

Oldest backup:

Last backup:

Top Processes by CPU:

Top Processes by Memory:

Top Processes by Network Use:

Top Processes by Energy Use:

Virtual Memory Information:

Software Installs (past 30 days):

Clean up:

/Library/LaunchDaemons/jp.co.canon.MasterInstaller.plist

/Library/PrivilegedHelperTools/jp.co.canon.MasterInstaller

Executable not found

Diagnostics Information (past 7 days):

2018-03-25 14:10:57 Last Shutdown Cause: 3 - Hard shutdown (once)

2018-03-25 11:48:03 Kyocera Opal.app Hang (once)

2018-03-22 14:20:40 Adobe Illustrator.app Crash (once)

End of report