MacBook Pro Mid 2012 slow

Question

I have a 13-inch Mid 2012 MacBook Pro 8GB RAM, 2.9GHz Intel Core i7, 750GB HDD running 10.11 El Capitan. It has been slightly slower since upgrading to El Capitan however about a week ago things slowed down dramatically. Simple tasks like right clicking and typing lag constantly and cause the pin wheel to pop up and spin. These kinds of lags last up to about 30 seconds before it finally catches up. I can&#x27;t play songs from iTunes as they also lag and pause mid song.I went to the genius bar and they ran diagnostic tests, hardware apparently wasn&#x27;t the issue, and the OS had corrupted. I got the MacBook completely wiped and the OS reinstalled. Went home, restored my files from my time machine back up and the problems are still occuring.My hard drive is clean I&#x27;ve used apps to clean it up. I&#x27;ve reset NVRAM and CMC. Running out of ideas. I have bought a RAM upgrade from crucial to take me up to 16GB of RAM. So my question is, do you think the RAM upgrade will work? If not what else could the problem be? Is this a terminal problem and a new MacBook may be the only solution?Below is the EtreCheck reportThanksEtreCheck version: 2.6.4 (224)Report generated 28/11/2015, 23:46Runtime 36:21Download EtreCheck from http://etresoft.com/etrecheckClick 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?)    MacBook Pro (13-inch, Mid 2012)     [Click for Technical Specifications]    [Click for User Guide]    MacBook Pro - model: MacBookPro9,2    1 2.9 GHz Intel Core i7 CPU: 2-core    8 GB RAM Upgradeable    [Click for upgrade instructions]        BANK 0/DIMM0            4 GB DDR3 1600 MHz ok        BANK 1/DIMM0            4 GB DDR3 1600 MHz ok    Bluetooth: Good - Handoff/Airdrop2 supported    Wireless:  en1: 802.11 a/b/g/n    Battery: Health &#x3D; Normal - Cycle count &#x3D; 779 - SN &#x3D; 9G2140728D3NCVideo Information: (What does this mean?)    Intel HD Graphics 4000        Color LCD 1280 x 800System Software: (What does this mean?)    OS X El Capitan 10.11 (15A284) - Time since boot: about 3 hoursDisk Information: (What does this mean?)    APPLE HDD TOSHIBA MK7559GSXF disk0 : (750.16 GB) (Rotational)        EFI (disk0s1) &lt;not mounted&gt; : 210 MB         Macintosh HD (disk0s2) / : 749.30 GB (554.52 GB free)        Recovery HD (disk0s3) &lt;not mounted&gt;  [Recovery]: 650 MB     MATSHITADVD-R   UJ-8A8   ()USB Information: (What does this mean?)    Apple Inc. FaceTime HD Camera (Built-in)     Apple Inc. Apple Internal Keyboard / Trackpad     Apple Computer, Inc. IR Receiver     Apple Inc. BRCM20702 Hub         Apple Inc. Bluetooth USB Host Controller Thunderbolt Information: (What does this mean?)    Apple Inc. thunderbolt_busGatekeeper: (What does this mean?)    AnywhereSystem Launch Daemons: (What does this mean?)    [failed]    com.apple.Kerberos.digest-service.plist [Click for details]Launch Agents: (What does this mean?)    [loaded]    com.epson.esua.launcher.plist [Click for support]    [loaded]    com.google.keystone.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.ea.origin.ESHelper.plist [Click for support]    [loaded]    com.google.keystone.daemon.plist [Click for support]    [loaded]    com.microsoft.office.licensing.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]User Launch Agents: (What does this mean?)    [failed]    com.apple.CSConfigDotMacCert-[...]@me.com-SharedServices.Agent.plist - /System/Library/Frameworks/CoreServices.framework/Frameworks/OSServices.framewo rk/Versions/A/Support/CSConfigDotMacCert: Executable not found!    [running]    com.spotify.webhelper.plist [Click for support]User Login Items: (What does this mean?)    NoneOther Apps: (What does this mean?)    [running]    com.apple.xpc.launchd.oneshot.0x10000011.EtreCheckInternet Plug-ins: (What does this mean?)    FlashPlayer-10.6: Version: 19.0.0.245 - SDK 10.6 [Click for support]    QuickTime Plugin: Version: 7.7.3    Flash Player: Version: 19.0.0.245 - SDK 10.6 [Click for support]    Default Browser: Version: 601 - SDK 10.11    SharePointBrowserPlugin: Version: 14.5.4 - SDK 10.6 [Click for support]    npgtpo3dautoplugin: Version: 0.1.44.23 - SDK 10.5 [Click for support]    Silverlight: Version: 5.1.10411.0 - SDK 10.6 [Click for support]    JavaAppletPlugin: Version: Java 8 Update 66 build 17 Check versionUser internet Plug-ins: (What does this mean?)    Picasa: Version: 1.0 - SDK 10.4 [Click for support]Safari Extensions: (What does this mean?)    AdBlock    Facebook Cleaner    Facebook Photo Zoom    GMail Counter3rd Party Preference Panes: (What does this mean?)    Flash Player  [Click for support]    Java  [Click for support]Time Machine: (What does this mean?)    Mobile backups: ON    Auto backup: YES    Volumes being backed up:    Destinations:        JDisk [Local]         Total size: 319.73 GB         Total number of backups: 2         Oldest backup: 04/10/2015, 15:20         Last backup: 04/10/2015, 17:05         Size of backup disk: Excellent            Backup size 319.73 GB &gt; (Disk size 0 B X 3)Top Processes by CPU: (What does this mean?)         5%    WindowServer         4%    kernel_task         0%    Safari         0%    cloudpairdTop Processes by Memory: (What does this mean?)    680 MB    kernel_task    623 MB    com.apple.WebKit.WebContent(4)    492 MB    softwareupdated    279 MB    Safari    98 MB    mtmdVirtual Memory Information: (What does this mean?)    2.95 GB    Free RAM     5.05 GB    Used RAM (1.34 GB Cached)    0 B    Swap Used Diagnostics Information: (What does this mean?)    Nov 28, 2015, 07:30:41 PM    Self test - passed    Nov 26, 2015, 10:25:07 AM    ~/Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2015-11-26-102507_[ redacted].crash    Nov 26, 2015, 10:19:08 AM    ~/Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2015-11-26-101908_[ redacted].crash    Nov 26, 2015, 10:09:31 AM    ~/Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2015-11-26-100931_[ redacted].crash    Nov 26, 2015, 10:00:06 AM    ~/Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2015-11-26-100006_[ redacted].crash    Nov 26, 2015, 09:54:52 AM    ~/Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2015-11-26-095452_[ redacted].crash

Linc Davis · Answer

When you see a beachball cursor or the slowness is especially bad, note the exact time: hour, minute, second.   These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.Launch the Console application in any of the following ways:☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.☞ Open LaunchPad and start typing the name.The title of the Console window should be All Messages. If it isn&#x27;t, select          SYSTEM LOG QUERIES ▹ All Messagesfrom the log list on the left. If you don&#x27;t see that list, select          View ▹ Show Log Listfrom the menu bar at the top of the screen.Each message in the log begins with the date and time when it was entered. Scroll back to the time you noted above.Select the messages entered from then until the end of the episode, or until they start to repeat, whichever comes first.Copy the messages to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.The log contains a vast amount of information, almost all of it useless for solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.Please don&#x27;t indiscriminately dump thousands of lines from the log into this discussion.Please don&#x27;t post screenshots of log messages—post the text.Some private information, such as your name, may appear in the log. Anonymize before posting.When you post the log extract, you might see an error message on the web page: "You have included content in your post that is not permitted," or "The message contains invalid characters." That&#x27;s a bug in the forum software. Please post the text on Pastebin, then post a link here to the page you created.If you have an account on Pastebin, please don&#x27;t select Private from the Paste Exposure menu on the page, because then no one but you will be able to see it.