High Sierra slow on a MacBook Pro 2011

I'm facing some slowness on my MacBook Pro (late 2011) since I've updated to High Sierra. It's not a heavy slowness but I face sometimes a bit of lag when I open some apps or files.

Facts:

1. Yes. I've used some of those magical cleaning tools (e.g. CleanMyMac) and I've already left them all away.

2. I've tried to reset SMC/PRAM before. Nothing (notable) happens.

3. I've tried to restart in safe mode to check. Improved a little bit.

4. I've no empty external HDD to make it a Time Machine drive. (IDK actually if it needs to be empty also)

5. I ran Etrecheck and its report is below (after that I've repaired my disk with First Aid via Recovery Mode):

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EtreCheck version: 4.1.4 (4A203)

Report generated: 2018-04-01 01:42:04

Download EtreCheck from https://etrecheck.com

Runtime: 4:25

Performance: Good

Problem: Computer is too slow

Description:

Computer is getting slow sometimes on open apps and files.

Major Issues:

Anything that appears on this list needs immediate attention.

No Time Machine backup - Time Machine backup not found.

Minor Issues:

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

Upgradeable hard drive - This machine’s hard drive could be replaced with an SSD. This would dramatically improve your machine’s performance.

Corrupt filesystem - This machine shut down due to a corrupt filesystem.

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

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

Hardware Information:

MacBook Pro (13-inch, Late 2011)

MacBook Pro Model: MacBookPro8,1

1 2,4 GHz Intel Core i5 (i5-2435M) CPU: 2-core

8 GB RAM At maximum

BANK 0/DIMM0

4 GB DDR3 1333 ok

BANK 1/DIMM0

4 GB DDR3 1333 ok

Battery: Health = Normal - Cycle count = 341

Video Information:

Intel HD Graphics 3000 - VRAM: 512 MB

Color LCD 1280 x 800

Drives:

disk0 - ST9500325ASG 500.11 GB (Mechanical)

Internal SATA 3 Gigabit Serial ATA

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

disk0s2 [Core Storage Container] 499.25 GB

disk1 - M*******h (Journaled HFS+) 498.88 GB

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

Mounted Volumes:

disk1 - M*******h 498.88 GB (375.81 GB free)

Journaled HFS+

Mount point: /

Network:

Interface en0: Ethernet

Interface en4: iPhone

Interface fw0: FireWire

Interface en1: Wi-Fi

802.11 a/b/g/n

One IPv4 address

Interface en3: Bluetooth PAN

Interface bridge0: Thunderbolt Bridge

iCloud Quota: 1.80 GB available

System Software:

macOS High Sierra 10.13.3 (17D102)

Time since boot: Less than an hour

System Load: 1.35 (1 min ago) 1.35 (5 min ago) 0.82 (15 min ago)

Security:

System	Status
Gatekeeper	Mac App Store and identified developers
System Integrity Protection	Enabled

Unsigned Files:

Launchd: /Library/LaunchAgents/com.diebold.warsaw.user.plist

Executable: /usr/local/bin/warsaw/core

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchAgents/com.videostream.launcher.plist

Executable: /Applications/Videostream.app/Contents/Resources/node /Applications/Videostream.app/Contents/Resources/lib/index.js

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.adobe.SwitchBoard.plist

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

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

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.videostream.updater.0.3.4.plist

Executable: /Library/Scripts/Videostream/Videostream.update

Launchd: /Library/LaunchDaemons/com.diebold.warsaw.plist

Executable: /usr/local/bin/warsaw/core

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

32-bit Applications:

58 32-bit apps

Kernel Extensions:

/Library/Extensions

[Loaded] ufsd_NTFS.kext (Paragon Software GmbH, 14.2.359 - SDK 10.5)

System Launch Agents:

[Not Loaded]	9 Apple tasks
[Loaded]	181 Apple tasks
[Running]	100 Apple tasks

System Launch Daemons:

[Not Loaded]	37 Apple tasks
[Loaded]	186 Apple tasks
[Running]	108 Apple tasks

Launch Agents:

[Not Loaded]	com.adobe.AdobeCreativeCloud.plist (Adobe Systems, Inc. - installed 2018-03-17)
[Not Loaded]	com.teamviewer.teamviewer_desktop.plist (TeamViewer GmbH - installed 2017-06-30)
[Not Loaded]	com.teamviewer.teamviewer.plist (TeamViewer GmbH - installed 2017-06-30)
[Not Loaded]	com.adobe.AAM.Updater-1.0.plist (? ffb65062 - installed 2018-03-17)
[Not Loaded]	com.paragon.updater.plist (Paragon Software GmbH - installed 2016-07-16)
[Running]	com.diebold.warsaw.user.plist (? 951b4e8c - installed 2017-07-07)
[Not Loaded]	com.adobe.GC.Invoker-1.0.plist (Adobe Systems, Inc. - installed 2018-03-18)
[Running]	com.videostream.launcher.plist (? 99a40bd - installed 2017-10-12)
[Not Loaded]	com.paragon-software.facebook.agent.plist (? 95fb0bd4 - installed 2016-07-16)
[Not Loaded]	com.paragon-software.NTFS.fsnotify.agent.plist (? dcda45f4 - installed 2016-07-17)

Launch Daemons:

[Running]	com.paragon-software.NTFS.fsnotify.daemon.plist (? 66744841 - installed 2016-07-16)
[Not Loaded]	com.teamviewer.teamviewer_service.plist (TeamViewer GmbH - installed 2017-06-30)
[Running]	com.adobe.adobeupdatedaemon.plist (Adobe Systems, Inc. - installed 2018-03-17)
[Loaded]	com.teamviewer.Helper.plist (TeamViewer GmbH - installed 2017-05-23)
[Loaded]	com.paragon.NTFS.launch.plist (Apple, Inc. - installed 2018-01-19)
[Loaded]	com.adobe.SwitchBoard.plist (? 68cad67 - installed 2017-06-27)
[Loaded]	com.adobe.fpsaud.plist (Adobe Systems, Inc. - installed 2018-02-23)
[Loaded]	com.microsoft.office.licensing.helper.plist (? 6d8cb30e - installed 2010-08-25)
[Running]	com.adobe.agsservice.plist (Adobe Systems, Inc. - installed 2018-03-18)
[Loaded]	com.macpaw.CleanMyMac3.Agent.plist (MacPaw Inc. - installed 2017-10-07)
[Loaded]	com.microsoft.office.licensingV2.helper.plist (Microsoft Corporation - installed 2015-08-15)
[Loaded]	com.videostream.updater.0.3.4.plist (? b96b2b8b - installed 2017-10-12)
[Running]	com.diebold.warsaw.plist (? be1144d8 - installed 2017-07-07)

User Launch Agents:

[Not Loaded]	com.spotify.webhelper.plist (Spotify - installed 2017-06-21)
[Not Loaded]	com.macpaw.CleanMyMac3.Scheduler.plist (MacPaw Inc. - installed 2017-09-25)
[Not Loaded]	com.adobe.GC.Invoker-1.0.plist (Adobe Systems, Inc. - installed 2018-03-18)
[Loaded]	com.skype.skype.shareagent.plist (Skype Communications S.a.r.l - installed 2017-10-02)

User Login Items:

com.adobe.SwitchBoard.monitor.plist MachInit

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

Internet Plug-ins:

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

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

QuickTime Plugin: 7.7.3 (installed 2018-01-31)

JavaAppletPlugin: 15.0.1 (installed 2017-07-30)

AdobeAAMDetect: 3.0.0.0 (installed 2018-03-17)

SharePointBrowserPlugin: 14.0.0 (installed 2010-08-25)

User Internet Plug-ins:

Folx3Plugin: 3.0.1 (installed 2017-08-15)

WebEx64: 1.1.0 (installed 2017-09-26)

Safari Extensions:

LastPass.safariextz - LastPass - https://lastpass.com/ (installed 2018-04-01)

3rd Party Preference Panes:

Flash Player (installed 2018-02-23)

Paragon NTFS for Mac® (installed 2017-10-07)

Time Machine:

Time Machine Not Configured!

Top Processes by CPU:

Process (count)	Source	% of CPU
mdworker (27)	Apple	28
WindowServer	Apple	11
mds	Apple	10
trustd (5)	Apple	7
curl	Apple	5

Top Processes by Memory:

Process (count)	Source	RAM usage
kernel_task	Apple	687 MB
mdworker (27)	Apple	555 MB
mds_stores	Apple	152 MB
node (2)	88 MB
WindowServer	Apple	62 MB

Top Processes by Network Use:

Process	Source	Input	Output
mDNSResponder	Apple	16 KB	13 KB
apsd	Apple	5 KB	9 KB
netbiosd	Apple	3 KB	2 KB
rapportd	Apple	342 B	368 B

Top Processes by Energy Use:

Process (count)	Source	Energy usage (0-100)
WindowServer	Apple	5
socketfilterfw	Apple	0
trustd (5)	Apple	0
fseventsd	Apple	0
mds	Apple	0

Virtual Memory Information:

Available RAM	4.73 GB
Free RAM	1.73 GB
Used RAM	3.27 GB
Cached files	3.00 GB
Swap Used	0 B

Diagnostics Information (past 7 days):

2018-04-01 01:28:35 Last Shutdown Cause: -60 - Corrupt filesystem (once)

2018-04-01 01:21:59 Adobe Desktop Service.app Crash (once)

objc_msgSend() selector name: lock

End of report

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Is there anything else to be done to make my MacBook a little bit faster w/ High Sierra or only a SSD upgrade can do it for me?

Thank you in advance!