Hey there. I'm also having the same issue on my 2009 MacBook, running Yosemite. I went ahead and did the test. These were my results and any help would be greatly appreciated.
EtreCheck version: 2.9.9 (260)
Report generated 2016-03-09 18:29:31
Download EtreCheck from https://etrecheck.com
Runtime 12:49
Performance: Poor
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Click the [Remove] links to remove adware.
Problem: Computer is too slow
Hardware Information: ⓘ
MacBook (13-inch, Late 2009)
[Technical Specifications] - [User Guide] - [Warranty & Service]
MacBook - model: MacBook6,1
1 2.26 GHz Intel Core 2 Duo CPU: 2-core
2 GB RAM - Insufficient RAM! Upgradeable - [Instructions]
BANK 0/DIMM0
1 GB DDR3 1067 MHz ok
BANK 1/DIMM0
1 GB DDR3 1067 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Battery: Health = Replace Soon - Cycle count = 1541
Video Information: ⓘ
NVIDIA GeForce 9400M - VRAM: 256 MB
Color LCD 1280 x 800
System Software: ⓘ
OS X Yosemite 10.10.5 (14F27) - Time since boot: less than an hour
Disk Information: ⓘ
Hitachi HTS545025B9SA02 disk0 : (250.06 GB) (Rotational)
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / : 249.20 GB (38.31 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
MATSHITADVD-R UJ-898 ()
USB Information: ⓘ
Apple Inc. Built-in iSight
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. BRCM2070 Hub
Apple Inc. Bluetooth USB Host Controller
Configuration files: ⓘ
/etc/hosts - Count: 15
Gatekeeper: ⓘ
Mac App Store and identified developers
Adware: ⓘ
/Library/LaunchDaemons/com.perion.searchprotectd.plist
One adware file found. [Remove]
Kernel Extensions: ⓘ
/System/Library/Extensions
[not loaded] com.mice.driver.Wireless360Controller (1.0.0d2 - 2016-02-23) [Support]
[not loaded] com.mice.driver.WirelessGamingReceiver (1.0.0d2 - 2016-02-23) [Support]
[not loaded] com.mice.driver.Xbox360Controller (1.0.0d9 - 2016-02-23) [Support]
[not loaded] com.novatelwireless.kext.wwan (3.0.20 - 2016-02-23) [Support]
[not loaded] com.wacom.kext.pentablet (5.2.6 - 2016-02-23) [Support]
/System/Library/Extensions/NovatelWirelessWWAN.kext/Contents/PlugIns
[not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMControl (3.0.20 - 2010-09-15) [Support]
[not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMData (3.0.20 - 2010-09-15) [Support]
[not loaded] com.novatelwireless.driver.3G (3.0.20 - 2010-09-15) [Support]
[not loaded] com.novatelwireless.driver.3GData (3.0.20 - 2010-09-15) [Support]
[not loaded] com.novatelwireless.driver.DisableAutoInstall (3.0.20 - 2010-09-15) [Support]
[not loaded] com.novatelwireless.driver.NWVBE (3.0.20 - 2010-09-15) [Support]
System Launch Agents: ⓘ
[not loaded] 5 Apple tasks
[loaded] 152 Apple tasks
[running] 38 Apple tasks
[killed] 17 Apple tasks
17 processes killed due to insufficient RAM
System Launch Daemons: ⓘ
[not loaded] 48 Apple tasks
[loaded] 142 Apple tasks
[running] 59 Apple tasks
[killed] 14 Apple tasks
14 processes killed due to insufficient RAM
Launch Agents: ⓘ
[not loaded] com.adobe.AAM.Updater-1.0.plist (2016-02-29) [Support]
[loaded] com.adobe.CS4ServiceManager.plist (2010-02-09) [Support]
[loaded] com.adobe.CS5ServiceManager.plist (2011-10-25) [Support]
[loaded] com.oracle.java.Java-Updater.plist (2014-10-19) [Support]
[running] com.wacom.pentablet.plist (2011-12-22) [Support]
Launch Daemons: ⓘ
[loaded] com.adobe.SwitchBoard.plist (2014-11-22) [Support]
[loaded] com.adobe.fpsaud.plist (2015-10-15) [Support]
[loaded] com.apple.aelwriter.plist
[loaded] com.cloudpath.maccmd.plist (2011-10-11) [Support]
[loaded] com.macpaw.CleanMyMac2.Agent.plist (2014-10-19) [Support]
[loaded] com.oracle.java.Helper-Tool.plist (2014-10-19) [Support]
[running] com.perion.searchprotectd.plist (2014-11-04) Adware! [Remove]
/Applications/SearchProtect/SearchProtect.app/Contents/MacOS/SearchProtect
User Launch Agents: ⓘ
[loaded] com.adobe.AAM.Updater-1.0.plist (2010-10-06) [Support]
[running] com.akamai.single-user-client.plist (2015-10-13) [Support]
[loaded] com.google.keystone.agent.plist (2016-03-05) [Support]
[failed] com.jdibackup.ZipCloud.autostart.plist (2014-11-03) [Support]
[loaded] com.macpaw.CleanMyMac2Helper.diskSpaceWatcher.plist (2015-08-05) [Support]
[loaded] com.macpaw.CleanMyMac2Helper.scheduledScan.plist (2015-08-05) [Support]
[loaded] com.macpaw.CleanMyMac2Helper.trashWatcher.plist (2015-08-05) [Support]
[loaded] com.valvesoftware.steamclean.plist (2016-02-16) [Support]
User Login Items: ⓘ
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
uTorrent UNKNOWN (missing value)
Plex Media Server UNKNOWN (missing value)
Google Drive UNKNOWN (missing value)
BambooCore Application (/Library/Application Support/Wacom/BambooCore.app)
HP Scheduler Application (/Library/Application Support/Hewlett-Packard/Software Update/HP Scheduler.app)
Other Apps: ⓘ
[running] com.etresoft.EtreCheck.109940
[running] com.hp.devicemonitor
[running] com.wacom.BambooCore.85800
[running] com.wacom.Consumer_TouchDriver.88072
[running] com.wacom.TabletDriver.88640
[loaded] 388 Apple tasks
[running] 114 Apple tasks
[killed] 34 Apple tasks
Internet Plug-ins: ⓘ
iPhotoPhotocast: 7.0 - SDK 10.7 (2013-05-23)
FlashPlayer-10.6: 19.0.0.226 - SDK 10.6 (2015-10-29) [Support]
Default Browser: 600 - SDK 10.10 (2015-08-21)
Flash Player: 19.0.0.226 - SDK 10.6 (2015-10-29) Outdated! Update
AdobePDFViewer: 10.1.1 (2013-05-21) [Support]
QuickTime Plugin: 7.7.3 (2015-08-21)
WacomNetscape: 1.1.1-1 (2012-02-21) [Support]
OfficeLiveBrowserPlugin: 12.3.6 (2013-04-12) [Support]
WacomTabletPlugin: WacomTabletPlugin 2.0.0.4 (2012-02-21) [Support]
DirectorShockwave: 11.5.9r620 (2011-05-22) [Support]
JavaAppletPlugin: Java 8 Update 66 build 17 (2015-12-06) Check version
User internet Plug-ins: ⓘ
fbplugin_1_0_3: Unknown (2010-02-26) [Support]
Unity Web Player: UnityPlayer version 2.6.1f3 (2010-02-07) [Support]
Safari Extensions: ⓘ
searchtab (2014-11-22)
3rd Party Preference Panes: ⓘ
Akamai NetSession Preferences (2015-10-13) [Support]
Flash Player (2015-10-15) [Support]
Java (2015-12-06) [Support]
Time Machine: ⓘ
Time Machine not configured!
Top Processes by CPU: ⓘ
8% WindowServer
2% kernel_task
2% ps
0% mds_stores
0% AppleSpell
Top Processes by Memory: ⓘ
235 MB kernel_task
61 MB mdworker(6)
61 MB mds_stores
57 MB soagent
55 MB cloudd
Virtual Memory Information: ⓘ
35 MB Free RAM
1.96 GB Used RAM (382 MB Cached)
0 B Swap Used
Diagnostics Information: ⓘ
Mar 9, 2016, 06:08:09 PM Self test - passed
Mar 9, 2016, 05:31:30 PM /Library/Logs/DiagnosticReports/MPlayerX_2016-03-09-173130_[redacted].hang
/Applications/MPlayerX.app/Contents/MacOS/MPlayerX
Mar 7, 2016, 12:38:48 AM ~/Library/Logs/DiagnosticReports/iMovie_2016-03-07-003848_[redacted].crash
com.apple.iMovieApp - /Applications/iMovie.app/Contents/MacOS/iMovie
Mar 7, 2016, 12:13:32 AM /Library/Logs/DiagnosticReports/After Effects_2016-03-07-001332_[redacted].cpu_resource.diag [Details]
/Applications/Adobe After Effects CS6/Adobe After Effects CS6.app/Contents/MacOS/After Effects
Mar 6, 2016, 10:41:47 PM ~/Library/Logs/DiagnosticReports/iMovie_2016-03-06-224147_[redacted].crash
Mar 6, 2016, 10:13:08 PM /Library/Logs/DiagnosticReports/iMovie_2016-03-06-221308_[redacted].hang
Mar 6, 2016, 10:07:25 PM /Library/Logs/DiagnosticReports/After Effects_2016-03-06-220725_[redacted].cpu_resource.diag [Details]
Mar 6, 2016, 07:25:59 PM /Library/Logs/DiagnosticReports/Adobe Photoshop CS6_2016-03-06-192559_[redacted].hang
/Applications/Adobe Photoshop CS6/Adobe Photoshop CS6.app/Contents/MacOS/Adobe Photoshop CS6