Slow Macbook Pro, EtreCheck results

Question

Hello,
like many others I also have the problem that pages in Safari are extremely slow loading. It's so slow that it is not usable anymore.
Also, it seems like Safari often throws me out of the Network and then has problems to log back, and asks me again for the network password and then doesn't recognize the password. All other devices on our network don't have that problem, so it seems to be specific to my laptop. Usually I can get the laptop to log back in to the network by turning wifi off for a second and then back on. But, of course, that's highly annoying.
The 2nd problem seems to be unrelated to the first, as the first one (the slow loading) has been going on forever. The 2nd problem only started after we changed the comcast router.
Please help me with my etreCheck results to figure this out! Any help is greatly appreciated.
Problem description:
Super slow loading pages in safari
EtreCheck version: 2.2 (132)
Report generated 4/28/15, 8:55 AM
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: ℹ️
    MacBook Pro (13-inch, Mid 2010) (Technical Specifications)
    MacBook Pro - model: MacBookPro7,1
    1 2.66 GHz Intel Core 2 Duo CPU: 2-core
    4 GB RAM Upgradeable
        BANK 0/DIMM0
            2 GB DDR3 1067 MHz ok
        BANK 1/DIMM0
            2 GB DDR3 1067 MHz ok
    Bluetooth: Old - Handoff/Airdrop2 not supported
    Wireless:  en1: 802.11 a/b/g/n
    Battery: Health = Normal - Cycle count = 109 - SN = 9G13516R7D3MA
Video Information: ℹ️
    NVIDIA GeForce 320M - VRAM: 256 MB
        Color LCD 1280 x 800
System Software: ℹ️
    OS X 10.10.3 (14D136) - Time since boot: 2 days 19:28:54
Disk Information: ℹ️
    HGST HTS725050A7E630 disk0 : (500.11 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Mavericks (disk0s2) / : 499.25 GB (330.60 GB free)
        Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB
    MATSHITADVD-R   UJ-898 
USB Information: ℹ️
    Apple Inc. Built-in iSight
    Apple Internal Memory Card Reader
    Apple Inc. BRCM2046 Hub
        Apple Inc. Bluetooth USB Host Controller
    Apple Inc. Apple Internal Keyboard / Trackpad
    Apple Computer, Inc. IR Receiver
Gatekeeper: ℹ️
    Mac App Store and identified developers
Problem System Launch Daemons: ℹ️
    [killed]    com.apple.AssetCacheLocatorService.plist
    [killed]    com.apple.ctkd.plist
    [killed]    com.apple.icloud.findmydeviced.plist
    [killed]    com.apple.ifdreader.plist
    [killed]    com.apple.installd.plist
    [killed]    com.apple.periodic-daily.plist
    [killed]    com.apple.periodic-monthly.plist
    [killed]    com.apple.periodic-weekly.plist
    [killed]    com.apple.softwareupdate_download_service.plist
    [killed]    com.apple.wdhelper.plist
    [killed]    org.cups.cupsd.plist
    11 processes killed due to memory pressure
Launch Agents: ℹ️
    [loaded]    com.google.keystone.agent.plist [Click for support]
Launch Daemons: ℹ️
    [loaded]    com.actualtechnologies.odbcdriver.ataccess.plist [Click for support]
    [loaded]    com.adobe.fpsaud.plist [Click for support]
    [loaded]    com.google.keystone.daemon.plist [Click for support]
    [loaded]    com.microsoft.office.licensing.helper.plist [Click for support]
User Login Items: ℹ️
    iTunesHelper    Application  (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Internet Plug-ins: ℹ️
    FlashPlayer-10.6: Version: 17.0.0.169 - SDK 10.6 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    Flash Player: Version: 17.0.0.169 - SDK 10.6 [Click for support]
    Default Browser: Version: 600 - SDK 10.10
    o1dbrowserplugin: Version: 5.41.0.0 - SDK 10.8 [Click for support]
    SharePointBrowserPlugin: Version: 14.4.6 - SDK 10.6 [Click for support]
    googletalkbrowserplugin: Version: 5.41.0.0 - SDK 10.8 [Click for support]
    Silverlight: Version: 5.1.30514.0 - SDK 10.6 [Click for support]
    JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
Safari Extensions: ℹ️
    AdBlock
    Save to Pocket
3rd Party Preference Panes: ℹ️
    Flash Player  [Click for support]
Time Machine: ℹ️
    Skip System Files: NO
    Auto backup: YES
    Volumes being backed up:
        Mavericks: Disk size: 499.25 GB Disk used: 168.65 GB
    Destinations:
        Time Capsule [Network]
        Total size: 3.00 TB
        Total number of backups: 56
        Oldest backup: 2014-08-17 00:27:25 +0000
        Last backup: 2015-04-28 04:52:06 +0000
        Size of backup disk: Excellent
            Backup size 3.00 TB > (Disk size 499.25 GB X 3)
Top Processes by CPU: ℹ️
        10%    WindowServer
         1%    fontd
         1%    mdworker(7)
         0%    nsurlstoraged(2)
         0%    taskgated
Top Processes by Memory: ℹ️
    872 MB    com.apple.WebKit.WebContent(4)
    462 MB    kernel_task
    303 MB    Safari
    303 MB    mdworker(7)
    94 MB    CalendarAgent
Virtual Memory Information: ℹ️
    148 MB    Free RAM
    3.85 GB    Used RAM
    8 MB    Swap Used
Diagnostics Information: ℹ️
    Apr 27, 2015, 11:08:52 AM    /Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2015-04-27-110852_[ redacted].cpu_resource.diag [Click for details]
    Apr 25, 2015, 01:24:41 PM    Self test - passed

Answer 1

Reinstalling OS X Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Reinstalling OS X Without Erasing the Drive
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility and press the Continue button. After Disk Utility loads select the Macintosh HD entry from the the left side list.  Click on the First Aid tab, then click on the Repair Disk button. If Disk Utility reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit Disk Utility and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
Alternatively, see:
Reinstall OS X Without Erasing the Drive
Choose the version you have installed now:
OS X Yosemite- Reinstall OS X
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
OS X Lion- Reinstall Mac OS X
     Note: You will need an active Internet connection. I suggest using Ethernet
                 if possible because it is three times faster than wireless.