iMac is extremely slow

Late 2012 version of iMac running macOS High Sierra with the original 1 TB SATA Disk hard drive. The computer has become extremely slow booting up, opening applications, closing applications, etc. I only use the computer for word processing and web surfing and just ordered a new 500 GB SSD from OWS. Will this resolve the issue or should I consider adding more RAM too (currently has the original 8 GB 1600 MHz DDR3)?

EtreCheck version: 4.1.4 (4A203)

Report generated: 2018-04-05 12:15:40

Download EtreCheck from https://etrecheck.com

Runtime: 27:02

Performance: Poor

Problem: Computer is too slow

Description:

iMac takes forever to boot up, launch applications, etc.

Major Issues:

Anything that appears on this list needs immediate attention.

No Time Machine backup - Time Machine backup not found.

Poor performance - EtreCheck report took over 10 minutes to run. This is very unusual.

Minor Issues:

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

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

Hardware Information:

iMac (21.5-inch, Late 2012)

iMac Model: iMac13,1

1 2.7 GHz Intel Core i5 (i5-3330S) CPU: 4-core

8 GB RAM Upgradeable

BANK 0/DIMM0

4 GB DDR3 1600 ok

BANK 1/DIMM0

4 GB DDR3 1600 ok

Drives:

disk0 - APPLE HDD ST1000LM024 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 (856.75 GB free)

Journaled HFS+

Mount point: /

disk0s3 - Recovery HD [Recovery] 650 MB (91 MB free)

Journaled HFS+

Mount point: /Volumes/Recovery HD

Network:

Interface en1: Wi-Fi

802.11 a/b/g/n

One IPv4 address

Interface Bluetooth-Modem: Bluetooth DUN

Interface en0: Ethernet

One IPv4 address

2 IPv6 addresses

Interface en4: Bluetooth PAN

Interface bridge0: Thunderbolt Bridge

iCloud Quota: 13.40 GB available

System Software:

macOS High Sierra 10.13.3 (17D102)

Time since boot: About 17 days

System Load: 2.27 (1 min ago) 1.89 (5 min ago) 1.75 (15 min ago)

Security:

Unsigned Files:

Launchd: /Library/LaunchAgents/com.paragon-software.facebook.agent.plist

Executable: /Library/Application Support/Paragon Software/Paragon Software Facebook Agent.app/Contents/MacOS/Paragon Software Facebook Agent

Details: Exact match found in the whitelist - probably OK

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.paragon-software.NTFS.fsnotify.daemon.plist

Executable: /Library/PreferencePanes/ParagonNTFS.prefPane/Contents/Resources/com.paragon-so ftware.NTFS.fsnotify.daemon

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchAgents/com.paragon-software.NTFS.fsnotify.agent.plist

Executable: /Library/PreferencePanes/ParagonNTFS.prefPane/Contents/Resources/com.paragon-so ftware.NTFS.fsnotify.agent.app/Contents/MacOS/com.paragon-software.NTFS.fsnotify .agent

Details: Exact match found in the whitelist - probably OK

Kernel Extensions:

/Library/Extensions

[Loaded] kimul.kext (Kaspersky Lab UK Limited, 46)

[Loaded] klif.kext (Kaspersky Lab UK Limited, 3.5.2a8)

[Loaded] mark.kext (Kaspersky Lab UK Limited, 1.0.6 - SDK 10.9)

[Loaded] klnke.kext (Kaspersky Lab UK Limited, 2.1.0)

[Loaded] ufsd_NTFS.kext (Paragon Software GmbH, 14.2.288 - SDK 10.5)

System Launch Agents:

System Launch Daemons:

Launch Agents:

Launch Daemons:

User Launch Agents:

User Login Items:

Dropbox Application (Dropbox, Inc.

(/Applications/Dropbox.app)

iTunesHelper Application (installed 2018-03-30)

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

Internet Plug-ins:

Flip4Mac WMV Plugin: 3.2.0.16 (installed 2013-09-28)

FlashPlayer-10.6: 29.0.0.113 (installed 2018-03-14)

QuickTime Plugin: 7.7.3 (installed 2018-02-02)

AdobePDFViewerNPAPI: 17.012.20098 (installed 2018-02-24)

AdobePDFViewer: 18.011.20038 (installed 2018-02-24)

Flash Player: 29.0.0.113 (installed 2018-03-14)

SharePointBrowserPlugin: 14.7.3 (installed 2017-04-13)

PepperFlashPlayer: 29.0.0.113 (installed 2018-03-14)

Silverlight: 5.1.20513.0 (installed 2013-09-29)

SiteAdvisor: 2.0 (installed 2015-03-22)

User Internet Plug-ins:

WebEx64: 1.1.0 (installed 2017-03-04)

Safari Extensions:

3rd Party Preference Panes:

Flash Player (installed 2018-02-23)

Flip4Mac WMV (installed 2013-09-28)

Paragon NTFS for Mac® (installed 2016-12-19)

Time Machine:

Time Machine Not Configured!

Top Processes by CPU:

Top Processes by Memory:

Top Processes by Network Use:

Top Processes by Energy Use:

Virtual Memory Information:

End of report