Apple Prores files not opening in preview nor quicktime. FCPX incredibly slow

This is Etrecheck's report, from which I don't understand a single thing, if you could please help me out that would be super helpful:

EtreCheck version: 3.4.6 (460)

Report generated 2017-12-16 20:51:34

Download EtreCheck from https://etrecheck.com

Runtime: 4:27

Performance: Good

Click the [Lookup] links for more information from Apple Support Communities.

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

Problem: Computer is too slow

Hardware Information: ⓘ

MacBook Pro (15-inch, 2017)

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

MacBook Pro - model: MacBookPro14,3

1 2.9 GHz Intel Core i7 (i7-7820HQ) CPU: 4-core

16 GB RAM Not upgradeable

BANK 0/DIMM0

8 GB LPDDR3 2133 MHz ok

BANK 1/DIMM0

8 GB LPDDR3 2133 MHz ok

Handoff/Airdrop2: supported

Wireless: en0: 802.11 a/b/g/n/ac

Battery: Health = Normal - Cycle count = 7

iCloud Quota: 33 MB available (Low!)

Video Information: ⓘ

Intel HD Graphics 630 - VRAM: 1536 MB

Color LCD 3360 x 2100

Radeon Pro 560 - VRAM: 4 GB

Disk Information: ⓘ

APPLE SSD SM1024L disk0: (1 TB) (Solid State - TRIM: Yes)

(disk0s1) <not mounted> [EFI]: 315 MB

(disk0s2) <not mounted> [APFS Container]: 1.00 TB

USB Information: ⓘ

USB30Bus

LaCie 2big TBT2 USB3

2big v2 THB USB3 disk2: (8 TB)

EFI (disk2s1 - MS-DOS FAT32) <not mounted> [EFI]: 210 MB

LaCie of Steel (disk2s2 - Journaled HFS+) /Volumes/LaCie of Steel : 8.00 TB (2.92 TB free)

Apple Inc. iBridge

composite_device

Mass-Storage disk3: (128.31 GB)

Untitled (disk3s1 - ExFAT) /Volumes/Untitled : 128.29 GB (96.86 GB free)

USB31Bus

USB31Bus

Thunderbolt Information: ⓘ

Apple Inc. thunderbolt_bus_1

Apple Inc. thunderbolt_bus_0

Virtual disks: ⓘ

Macintosh HD (disk1s1 - APFS) / [Startup]: 1.00 TB (465.28 GB free)

Physical disk: disk0s2 1.00 TB (465.28 GB free)

(disk1s2) <not mounted> [Preboot]: 1.00 TB

Physical disk: disk0s2 1.00 TB

(disk1s3) <not mounted> [Recovery]: 1.00 TB

Physical disk: disk0s2 1.00 TB

(disk1s4) /private/var/vm [VM]: 1.00 TB

Physical disk: disk0s2 1.00 TB

System Software: ⓘ

macOS High Sierra 10.13.2 (17C89) - Time since boot: less than an hour

Gatekeeper: ⓘ

Mac App Store and identified developers

Kernel Extensions: ⓘ

/Library/Extensions

[loaded] com.avira.kext.FileAccessControl (1.2.5 - SDK 10.9) [Lookup]

System Launch Agents: ⓘ

[not loaded] 7 Apple tasks

[loaded] 166 Apple tasks

[running] 117 Apple tasks

System Launch Daemons: ⓘ

[not loaded] 39 Apple tasks

[loaded] 171 Apple tasks

[running] 120 Apple tasks

Launch Agents: ⓘ

[not loaded] com.adobe.AAM.Updater-1.0.plist (Adobe Systems, Inc. - installed 2017-12-06) [Lookup]

[running] com.adobe.AdobeCreativeCloud.plist (Adobe Systems, Inc. - installed 2017-12-06) [Lookup]

[loaded] com.avira.antivirus.general.agent.plist (? 94ca9a28 3dcf93f8 - installed 2017-12-16) [Lookup]

[loaded] com.avira.antivirus.gjallarhorn.plist (Avira Operations GmbH & Co. KG - installed 2017-12-13) [Lookup]

[not loaded] com.avira.antivirus.iris.plist (Avira Operations GmbH & Co. KG - installed 2017-12-13) [Lookup]

[loaded] com.avira.antivirus.notifications.agent.plist (? 8b13021d 3dcf93f8 - installed 2017-12-16) [Lookup]

[loaded] com.avira.antivirus.odscan.default.plist (? 6759fe6f 3dcf93f8 - installed 2017-12-16) [Lookup]

[loaded] com.avira.antivirus.scheduler.agent.plist (? 4b765eec 3dcf93f8 - installed 2017-12-16) [Lookup]

[running] com.avira.antivirus.systray.plist (? 9bf80dc3 face15b8 - installed 2017-12-16) [Lookup]

[loaded] com.avira.antivirus.telemetry.agent.plist (? a4625078 3dcf93f8 - installed 2017-12-16) [Lookup]

[loaded] com.avira.antivirus.update.default.plist (? 7dca32a5 3dcf93f8 - installed 2017-12-16) [Lookup]

[running] com.avira.helper.avstats.plist (? cf66ea88 a28384e2 - installed 2017-12-13) [Lookup]

[loaded] com.avira.servicehub.license.plist (Avira Operations GmbH & Co. KG - installed 2017-12-13) [Lookup]

[loaded] com.avira.servicehub.license.poll.plist (Avira Operations GmbH & Co. KG - installed 2017-12-13) [Lookup]

Launch Daemons: ⓘ

[loaded] com.adobe.acc.installer.plist (Adobe Systems, Inc. - installed 2017-12-06) [Lookup]

[running] com.adobe.agsservice.plist (Adobe Systems, Inc. - installed 2017-12-13) [Lookup]

[failed] com.avira.antivirus.dbcleaner.plist (? 223cb974 24f6020f - installed 2017-12-16) [Lookup]

[running] com.avira.helper.watchdox.plist (? e7e538d1 e163ec4c - installed 2017-12-16) [Lookup]

[loaded] com.fxfactory.FxFactory.helper.plist (Noise Industries, LLC - installed 2017-12-09) [Lookup]

[loaded] com.malwarebytes.HelperTool.plist (Malwarebytes Corporation - installed 2017-12-06) [Lookup]

[loaded] com.microsoft.autoupdate.helper.plist (Microsoft Corporation - installed 2017-12-12) [Lookup]

[loaded] com.microsoft.office.licensingV2.helper.plist (Microsoft Corporation - installed 2016-04-11) [Lookup]

[loaded] com.nordvpn.NordVPN.Helper.plist (TEFINKOM & CO S.A - installed 2017-12-06) [Lookup]

User Launch Agents: ⓘ

[not loaded] com.adobe.AAM.Updater-1.0.plist (Adobe Systems, Inc. - installed 2017-12-06) [Lookup]

[loaded] com.dropbox.DropboxMacUpdate.agent.plist (Dropbox, Inc. - installed 2017-12-06) [Lookup]

[running] com.spotify.webhelper.plist (Spotify - installed 2017-12-16) [Lookup]

User Login Items: ⓘ

Spotify Application - Hidden

(/Applications/Spotify.app)

Amazon Drive Application

(/Applications/Amazon Drive.app)

Dropbox Application

(/Applications/Dropbox.app)

BitTorrent Application

(/Applications/BitTorrent.app)

Infinit Application

(/Applications/Infinit.app)

iTunesHelper Application (Apple, Inc. - installed 2017-12-09)

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

Internet Plug-ins: ⓘ

AdobeAAMDetect: 3.0.0.0 (installed 2017-12-06) [Lookup]

QuickTime Plugin: 7.7.3 (installed 2017-12-16)

3rd Party Preference Panes: ⓘ

ApplyLUTPane (installed 2014-07-09) [Lookup]

Time Machine: ⓘ

Auto backup: YES

Volumes being backed up:

Macintosh HD: Disk size: 1.00 TB Disk used: 534.96 GB

Destinations:

LaCie of Steel [Local]

Total size: 8.00 TB

Total number of backups: 2

Oldest backup: 12/16/17, 6:39 PM

Last backup: 12/16/17, 7:47 PM

Size of backup disk: Excellent

Backup size 8.00 TB > (Disk size 1.00 TB X 3)

Top Processes by CPU: ⓘ

37% com.apple.WebKit.WebContent

16% savapi

15% kernel_task

8% backupd

7% com.apple.WebKit.Networking

Top Processes by Memory: ⓘ

1.34 GB kernel_task

549 MB com.apple.WebKit.WebContent

346 MB savapi

296 MB com.apple.WebKit.WebContent

250 MB Safari

Top Processes by Network Use: ⓘ

Input Output Process name

68 MB 4 MB BitTorrent

6 MB 330 KB com.apple.WebKit.Networking

80 KB 175 KB Dropbox

15 KB 122 KB biometrickitd

18 KB 14 KB mDNSResponder

Top Processes by Energy Use: ⓘ

26.98 backupd

15.02 savapi

12.34 com.apple.WebKit.WebContent

5.38 VTDecoderXPCService

3.80 launchd

Virtual Memory Information: ⓘ

7.37 GB Available RAM

51 MB Free RAM

8.63 GB Used RAM

7.32 GB Cached files

1 MB Swap Used

Software installs (last 30 days): ⓘ

Avira Antivirus: (installed 2017-12-06)

FxFactory: (installed 2017-12-06)

LUT Utility for FCP X: (installed 2017-12-06)

Flicker Free FxPlug 1.1.3: 1.1.3 (installed 2017-12-09)

FxFactory: (installed 2017-12-09)

FxFactory: (installed 2017-12-09)

Flicker Free FxPlug 1.1.6: 1.1.6 (installed 2017-12-09)

Microsoft Office 2016 for Mac: (installed 2017-12-12)

Microsoft AutoUpdate: (installed 2017-12-12)

Microsoft AutoUpdate: (installed 2017-12-12)

Microsoft Office 2016 Volume License Serializer: (installed 2017-12-12)

MacBooster 6: (installed 2017-12-14)

Install information may not be complete.

Diagnostics Events (last 3 days for minor events): ⓘ

2017-12-16 20:14:25 Installer.app Hang [Open]

2017-12-15 16:16:26 mdworker High CPU use [Open] [Details]

2017-12-15 13:14:30 installd High CPU use [Open] [Details]

Files deleted by EtreCheck: ⓘ

2017-12-15 12:22:31 - ~/Library/LaunchAgents/com.iobit.MacBoosterMini6.plist - Unknown

2017-12-15 12:22:31 - ~/Library/LaunchAgents/com.skype.skype.shareagent.plist - Unknown

Hey Luis,

Thank you loads for the support. I was running the 10.13.1 version, then I downloaded and installed the 10.13.2 COMBO as suggested and it all went smoothly - I previously had an installation problem with the App Store software update just 4 days ago. However, I found out it's not about the prores format, the opening of new video files in mp4 format is just as slow. I am copying videos from a sdxc card, about 30GB, and the speed worryingly fluctuates between 40 minutes and 9 hours.

There clearly is a huge problem with video files both in opening and even transferring. Major downer after spending over 3000$, super disappointed. What the **** is apple doing to their software?

Yes but same problem. Preview and quicktime just can't open the files. Sounds a bit ridiculous though, Prores is apple's movie files...

All working as expected now! You are a legend!