Sinds enige tijd heb ik een probleem met het afspelen van filmpjes (o.a. Youtube en FB filmpjes) het filmvenster wordt dan groen en m’n Mac loopt vast. Het enige wat ik dan kan doen dmv control-quit toetsencombinatie de browser afsluiten (zowel Safari als Firefox).
Het rare is dat dit niet gebeurt als de computer net opgestart is, dan kan ik de filmpjes gewoon bekijken, pas na enige tijd treed het probleem op.

Heeft iemand enig idee hoe dit op te lossen is?

Ik heb een iMac mid 2011 (8 GB) met Mac OS High Sierra 10.13.5.

Deze was ik nog vergeten:

EtreCheck version: 2.3 (135)
Report generated 7/5/18, 12:27 PM
Download EtreCheck from http://etresoft.com/etrecheck

Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.

Hardware Information: (What does this mean?)
    iMac (21.5-inch, Mid 2011) (Technical Specifications)
    iMac - model: iMac12,1
    1 2,5 GHz Intel Core i5 CPU: 4-core
    8 GB RAM Upgradeable
        BANK 0/DIMM0
            2 GB DDR3 1333 MHz ok
        BANK 1/DIMM0
            2 GB DDR3 1333 MHz ok
        BANK 0/DIMM1
            4 GB DDR3 1333 MHz ok
        BANK 1/DIMM1
            Empty   
    Bluetooth: Old - Handoff/Airdrop2 not supported
    Wireless:  en1: 802.11 a/b/g/n

Video Information: (What does this mean?)
    AMD Radeon HD 6750M
        iMac 1920 x 1080

System Software: (What does this mean?)
    macOS 10.13.5 (17F77) - Time since boot: about 4 hours

Disk Information: (What does this mean?)
    ST3500418AS disk0 : (500,11 GB) (Rotational)
        EFI (disk0s1) <not mounted> : 210 MB
        Macintosh HD (disk0s2) / : 499.25 GB (274.17 GB free)
        Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB

    OPTIARC DVD RW AD-5690H   ()

USB Information: (What does this mean?)
    Apple Inc. FaceTime HD Camera (Built-in)
    Apple, Inc. Keyboard Hub
        Apple Inc. Apple Keyboard
    Logitech USB Receiver
    Seagate Expansion Desk
    Apple Inc. BRCM2046 Hub
        Apple Inc. Bluetooth USB Host Controller
    Western Digital Ext HDD 1021
    Western Digital My Book 1230
    Apple Computer, Inc. IR Receiver
    Apple Internal Memory Card Reader

Thunderbolt Information: (What does this mean?)
    Apple Inc. thunderbolt_bus

Gatekeeper: (What does this mean?)
    Mac App Store and identified developers

Kernel Extensions: (What does this mean?)
        /Applications/DiskWarrior.app
    [not loaded]    com.alsoft.Preview (5 - SDK 10.5) [Click for support]

        /Applications/Toast 11 Titanium/Spin Doctor.app
    [not loaded]    com.hzsystems.terminus.driver (4) [Click for support]

        /Library/Application Support/VirtualBox
    [loaded]    org.virtualbox.kext.VBoxDrv (5.2.12) [Click for support]
    [loaded]    org.virtualbox.kext.VBoxNetAdp (5.2.12) [Click for support]
    [loaded]    org.virtualbox.kext.VBoxNetFlt (5.2.12) [Click for support]
    [loaded]    org.virtualbox.kext.VBoxUSB (5.2.12) [Click for support]

        /System/Library/Extensions
    [not loaded]    com.roxio.BluRaySupport (1.1.6) [Click for support]

        /Volumes/HD C 3TB/Backup gebruikers/2017-09-09/Users/[redacted]/Library/Services/ToastIt.service/Contents/MacOS
    [not loaded]    com.roxio.TDIXController (2.0) [Click for support]

Problem System Launch Agents: (What does this mean?)
    [failed]    com.apple.corespeechd.plist [Click for details]
    [loaded]    com.openssh.ssh-agent.plist [Click for support]

Problem System Launch Daemons: (What does this mean?)
    [not loaded]    org.ntp.ntpd-legacy.plist [Click for support]

Launch Agents: (What does this mean?)
    [loaded]    com.microsoft.update.agent.plist [Click for support]
    [loaded]    com.oracle.java.Java-Updater.plist [Click for support]

Launch Daemons: (What does this mean?)
    [loaded]    com.adobe.fpsaud.plist [Click for support]
    [loaded]    com.malwarebytes.HelperTool.plist [Click for support]
    [loaded]    com.microsoft.autoupdate.helper.plist [Click for support]
    [loaded]    com.microsoft.office.licensingV2.helper.plist [Click for support]
    [loaded]    com.oracle.java.Helper-Tool.plist [Click for support]
    [not loaded]    org.virtualbox.startup.plist [Click for support]

User Launch Agents: (What does this mean?)
    [loaded]    com.adobe.ARM.[...].plist [Click for support]
    [loaded]    com.facebook.videochat.[redacted].plist [Click for support]
    [loaded]    com.google.keystone.agent.plist [Click for support]
    [loaded]    com.macpaw.CleanMyMac3.Scheduler.plist [Click for support]
    [failed]    com.myheritage.familytreebuilder.checkupdates.plist [Click for support] [Click for details]
    [not loaded]    org.virtualbox.vboxwebsrv.plist [Click for support]

User Login Items: (What does this mean?)
    TomTomMyDriveConnectHelper    Programma  (/Applications/TomTom MyDrive Connect.app/Contents/MacOS/TomTomMyDriveConnectHelper.app)
    MenuMetersApp    Programma  (~/Library/PreferencePanes/MenuMeters.prefPane/Contents/Resources/MenuMetersApp.app)
    iTunesHelper    Programma  (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
    DiskWarriorStarter    Programma  (/Applications/DiskWarrior.app/Contents/Helpers/DiskWarriorStarter.app)
    CleanMyMac 3 Menu    UNKNOWN  (missing value)

Internet Plug-ins: (What does this mean?)
    Flip4Mac WMV Plugin: Version: 3.2.0.16   - SDK 10.8 [Click for support]
    FlashPlayer-10.6: Version: 23.0.0.162 - SDK 10.9 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    AdobePDFViewerNPAPI: Version: 11.0.23 - SDK 10.6 [Click for support]
    AdobePDFViewer: Version: 11.0.23 - SDK 10.6 [Click for support]
    Flash Player: Version: 23.0.0.162 - SDK 10.9 Outdated! Update
    iPhotoPhotocast: Version: 7.0 - SDK 10.8
    SharePointBrowserPlugin: Version: 14.6.7 - SDK 10.6 [Click for support]
    Silverlight: Version: 5.1.30514.0 - SDK 10.6 [Click for support]
    JavaAppletPlugin: Version: Java 8 Update 171 build 11 Check version

User internet Plug-ins: (What does this mean?)
    Google Earth Web Plug-in: Version: 7.1 [Click for support]

Safari Extensions: (What does this mean?)
    AdBlock

3rd Party Preference Panes: (What does this mean?)
    Flash Player  [Click for support]
    Java  [Click for support]
    MenuMeters  [Click for support]

Time Machine: (What does this mean?)
    Mobile backups: OFF
    Auto backup: YES
    Volumes being backed up:
        Macintosh HD: Disk size: 499.25 GB Disk used: 225.08 GB
    Destinations:
        TM Backup [Local]
        Total size: 2.00 TB
        Total number of backups: 112
        Oldest backup: 2017-01-20 14:14:08 +0000
        Last backup: 2018-07-05 09:32:46 +0000
        Size of backup disk: Excellent
            Backup size 2.00 TB > (Disk size 499.25 GB X 3)

Top Processes by CPU: (What does this mean?)
         4%    WindowServer
         3%    Transmission
         3%    iTunes
         0%    VBoxSVC
         0%    fontd

Top Processes by Memory: (What does this mean?)
    829 MB    kernel_task
    573 MB    plugin-container(3)
    532 MB    Safari
    393 MB    iTunes
    311 MB    mdworker(16)

Virtual Memory Information: (What does this mean?)
    1.73 GB    Free RAM
    6.27 GB    Used RAM (1.96 GB Cached)
    40 MB    Swap Used

Diagnostics Information: (What does this mean?)
    Jul 5, 2018, 11:29:19 AM    /Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2018-07-05-112919_[redacted].cpu_resource.diag [Click for details]
    Jul 5, 2018, 08:06:27 AM    /Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2018-07-05-080627_[redacted].cpu_resource.diag [Click for details]
    Jul 5, 2018, 07:26:57 AM    Self test - passed
    Jul 4, 2018, 11:15:03 PM    ~/Library/Logs/DiagnosticReports/com.apple.Safari.SearchHelper_2018-07-04-231503_[redacted].crash
    Jul 4, 2018, 05:08:44 PM    /Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2018-07-04-170844_[redacted].cpu_resource.diag [Click for details]
    Jul 4, 2018, 02:17:13 PM    /Library/Logs/DiagnosticReports/Kernel_2018-07-04-141713_[redacted].panic [Click for details]
    Jul 4, 2018, 08:04:49 AM    /Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2018-07-04-080449_[redacted].cpu_resource.diag [Click for details]
    Jul 3, 2018, 03:45:58 PM    /Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2018-07-03-154558_[redacted].cpu_resource.diag [Click for details]
    Jul 3, 2018, 02:58:26 PM    /Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2018-07-03-145826_[redacted].cpu_resource.diag [Click for details]
    Jul 3, 2018, 02:23:03 PM    ~/Library/Logs/DiagnosticReports/VirtualBoxVM_2018-07-03-142303_[redacted].crash
    Jul 3, 2018, 10:26:54 AM    ~/Library/Logs/DiagnosticReports/plugin-container_2018-07-03-102654_[redacted].crash
    Jul 3, 2018, 10:26:27 AM    /Library/Logs/DiagnosticReports/firefox_2018-07-03-102627_[redacted].hang
    Jul 3, 2018, 08:59:49 AM    /Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2018-07-03-085949_[redacted].cpu_resource.diag [Click for details]
    Jul 2, 2018, 07:14:00 PM    /Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2018-07-02-191400_[redacted].cpu_resource.diag [Click for details]
    Jul 2, 2018, 06:55:18 PM    /Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2018-07-02-185518_[redacted].cpu_resource.diag [Click for details]
    Jul 2, 2018, 02:11:12 PM    /Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2018-07-02-141112_[redacted].cpu_resource.diag [Click for details]
    Jul 2, 2018, 02:01:27 PM    /Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2018-07-02-140127_[redacted].cpu_resource.diag [Click for details]
    Jul 2, 2018, 10:45:42 AM    /Library/Logs/DiagnosticReports/Kernel_2018-07-02-104542_[redacted].panic [Click for details]

Heeft niemand een idee?

Om te beginnen haal CleanMyMac Rotzooi weg.

User Launch Agents: (What does this mean?)
    [loaded]    com.macpaw.CleanMyMac3.Scheduler.plist [Click for support]

User Login Items: (What does this mean?)
        CleanMyMac 3 Menu    UNKNOWN  (missing value)

Flip4Mac is verouderd (kan weg)

2x Flash Player met zelfde versienr waarvan er 1 verouderd is 
gooi ze alletwee weg kijk een tijdje of je kan internetten zonder
mocht het niet zo zijn kan je bij adobe.com de laatste versie weer ophalen.

"Silverlight", je kan vaak zonder deinstaleer.

Internet Plug-ins: (What does this mean?)
    Flip4Mac WMV Plugin: Version: 3.2.0.16   - SDK 10.8 [Click for support]
    FlashPlayer-10.6: Version: 23.0.0.162 - SDK 10.9 [Click for support]
    Flash Player: Version: 23.0.0.162 - SDK 10.9 Outdated! Update
    Silverlight: Version: 5.1.30514.0 - SDK 10.6 [Click for support]

-Cleanmymac heb ik weggehaald wat je nu nog ervan ziet zijn de overblijfselen. Helaas heb ik geen idee hoe ik die weg krijg.

-Silverlight ga ik verwijderen.

-Flash de oude versie ga ik weggooien, de andere moet (helaas) blijven, anders krijg ik ruzie met mijn vrouw

Na CleanMyMac adviseer ik je een volledige herinstallatie...

-Cleanmymac heb ik weggehaald wat je nu nog ervan ziet zijn de overblijfselen. Helaas heb ik geen idee hoe ik die weg krijg.

Gewoon opzoeken met Spotlight en daarna weggooien.

https://lifehacker.com/5711409/how-to-search-for-hidden-packaged-and-system-files-in-os-x