I am having the same problem and a friend of mine is as well. Plus when it is in sleep mode it takes ages to reawaken.
Did an EtreCheck and this is my stats
Problem description:
Macbook is running slow and crashing after Yosemite
EtreCheck version: 2.4 (136)
Report generated 8/14/15, 10:15 AM
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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?)
MacBook Pro (13-inch, Mid 2012) (Technical Specifications)
MacBook Pro - model: MacBookPro9,2
1 2.5 GHz Intel Core i5 CPU: 2-core
8 GB RAM Upgradeable
BANK 0/DIMM0
4 GB DDR3 1600 MHz ok
BANK 1/DIMM0
4 GB DDR3 1600 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Battery: Health = Normal - Cycle count = 568 - SN = 9G24712YJD3MB
Video Information: (What does this mean?)
Intel HD Graphics 4000
Color LCD 1280 x 800
System Software: (What does this mean?)
OS X 10.10.4 (14E46) - Time since boot: about 18 days
Disk Information: (What does this mean?)
APPLE HDD HTS547575A9E384 disk0 : (750.16 GB) (Rotational)
EFI (disk0s1) <not mounted> : 210 MB
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
Macintosh HD (disk1) / : 748.93 GB (254.38 GB free)
Core Storage: disk0s2 749.30 GB Online
MATSHITADVD-R UJ-8A8 ()
USB Information: (What does this mean?)
Apple Inc. FaceTime HD Camera (Built-in)
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Computer, Inc. IR Receiver
Apple Inc. Apple Internal Keyboard / Trackpad
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?)
/Library/Application Support/MacKeeper/AntiVirus.app
[not loaded] net.kromtech.kext.AVKauth (2.3.8 - SDK 10.10) [Click for support]
[not loaded] net.kromtech.kext.Firewall (2.3.8 - SDK 10.10) [Click for support]
/System/Library/Extensions
[loaded] com.cisco.kext.acsock (1.1.0 - SDK 10.2) [Click for support]
[not loaded] com.paceap.kext.PACESupport (5.4.1) [Click for support]
[not loaded] com.paceap.kext.PACESupport2 (5.4.1) [Click for support]
[not loaded] com.parallels.kext.ConnectUSB (3.0.0) [Click for support]
[not loaded] com.parallels.kext.Pvsnet (3.0) [Click for support]
[not loaded] com.parallels.kext.hypervisor (3.0) [Click for support]
[not loaded] com.parallels.kext.vmmain (3.0) [Click for support]
Startup Items: (What does this mean?)
ciscod: Path: /System/Library/StartupItems/ciscod
AutorunKit: Path: /Library/StartupItems/AutorunKit
ColdFusionMX7: Path: /Library/StartupItems/ColdFusionMX7
PACESupport: Path: /Library/StartupItems/PACESupport
Privoxy: Path: /Library/StartupItems/Privoxy
Qmaster: Path: /Library/StartupItems/Qmaster
Startup items are obsolete in OS X Yosemite
Problem System Launch Agents: (What does this mean?)
[killed] com.apple.AirPlayUIAgent.plist
[killed] com.apple.CallHistoryPluginHelper.plist
[killed] com.apple.CallHistorySyncHelper.plist
[killed] com.apple.cloudd.plist
[killed] com.apple.cloudphotosd.plist
[killed] com.apple.cmfsyncagent.plist
[killed] com.apple.coreservices.appleid.authentication.plist
[killed] com.apple.EscrowSecurityAlert.plist
[killed] com.apple.Maps.pushdaemon.plist
[killed] com.apple.printtool.agent.plist
[killed] com.apple.rcd.plist
[killed] com.apple.SafariNotificationAgent.plist
[killed] com.apple.sbd.plist
[killed] com.apple.scopedbookmarkagent.xpc.plist
[killed] com.apple.security.cloudkeychainproxy.plist
[killed] com.apple.telephonyutilities.callservicesd.plist
[failed] org.thebends.iphonedisk.mobile_fs_util.plist [Click for support]
16 processes killed due to memory pressure
Problem System Launch Daemons: (What does this mean?)
[killed] com.apple.AssetCacheLocatorService.plist
[killed] com.apple.awdd.plist
[killed] com.apple.ctkd.plist
[killed] com.apple.emond.aslmanager.plist
[killed] com.apple.icloud.findmydeviced.plist
[killed] com.apple.ifdreader.plist
[killed] com.apple.installd.plist
[killed] com.apple.nehelper.plist
[killed] com.apple.nsurlsessiond.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.softwareupdated.plist
[killed] com.apple.wdhelper.plist
[killed] com.apple.xpc.smd.plist
16 processes killed due to memory pressure
Launch Agents: (What does this mean?)
[loaded] com.cisco.anyconnect.gui.plist [Click for support]
[loaded] com.divx.dms.agent.plist [Click for support]
[loaded] com.divx.update.agent.plist [Click for support]
[running] com.hp.devicemonitor.plist [Click for support]
[loaded] com.hp.messagecenter.launcher.plist [Click for support]
[running] com.hp.productresearch.plist [Click for support]
[unknown] com.oracle.java.Java-Updater.plist [Click for support]
[loaded] org.macosforge.xquartz.startx.plist [Click for support]
Launch Daemons: (What does this mean?)
[loaded] com.adobe.fpsaud.plist [Click for support]
[running] com.cisco.anyconnect.vpnagentd.plist [Click for support]
[loaded] com.ciscosystems.ciscoconnect.daemon.plist [Click for support]
[loaded] com.ea.origin.ESHelper.plist [Click for support]
[running] com.mackeeper.MacKeeper.plugin.AntiTheft.daemon.plist [Click for support]
[unknown] com.oracle.java.Helper-Tool.plist [Click for support]
[running] com.zeobit.MacKeeper.AntiVirus.plist [Click for support]
[loaded] org.macosforge.xquartz.privileged_startx.plist [Click for support]
[failed] PACESupport.plist [Click for support]
User Launch Agents: (What does this mean?)
[loaded] com.adobe.ARM.[...].plist [Click for support]
[running] com.amazon.music.plist [Click for support]
[loaded] com.google.keystone.agent.plist [Click for support]
[loaded] com.jdibackup.ZipCloud.autostart.plist [Click for support]
[loaded] com.jdibackup.ZipCloud.notify.plist [Click for support]
[running] com.mackeeper.MacKeeper.Helper.plist [Click for support]
[failed] com.spigot.SearchProtection.plist [Click for support]
[loaded] com.valvesoftware.steamclean.plist [Click for support]
User Login Items: (What does this mean?)
Steam Application (/Applications/Games bought/Steam.app)
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Dropbox Application (/Applications/Dropbox.app)
TuneupMyMac UNKNOWN (missing value)
Android File Transfer Agent Application (~/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)
Music Manager Application Hidden (~/Library/PreferencePanes/MusicManager.prefPane/Contents/Helpers/MusicManagerH elper.app)
Wondershare Helper Compact Application (~/Library/Application Support/Helper/Wondershare Helper Compact.app)
HP Communications Application (/Library/Printers/hp/HP Communications.app)
Internet Plug-ins: (What does this mean?)
DirectorShockwave: Version: 11.0.0r458 [Click for support]
OVSHelper: Version: 1.1 [Click for support]
Default Browser: Version: 600 - SDK 10.10
Flip4Mac WMV Plugin: Version: 3.2.0.16 - SDK 10.8 [Click for support]
AmazonMP3DownloaderPlugin101750: Version: AmazonMP3DownloaderPlugin 1.0.17 - SDK 10.4 [Click for support]
RealPlayer Plugin: Version: Unknown [Click for support]
Silverlight: Version: 5.1.30514.0 - SDK 10.6 [Click for support]
AmazonMP3DownloaderPlugin101736: Version: AmazonMP3DownloaderPlugin 1.0.17 - SDK 10.4 [Click for support]
DivX Web Player: Version: 3.3.1.10 - SDK 10.10 [Click for support]
FlashPlayer-10.6: Version: 18.0.0.232 - SDK 10.6 [Click for support]
Flash Player: Version: 18.0.0.232 - SDK 10.6 [Click for support]
iPhotoPhotocast: Version: 6.0
QuickTime Plugin: Version: 7.7.3
Unity Web Player: Version: UnityPlayer version 4.5.1f3 - SDK 10.6 [Click for support]
AdobePDFViewer: Version: 8.3.1 [Click for support]
np-tfglaunch-plugin: Version: ©Tenderfoot Games, LLC. All rights reserved. [Click for support]
Veoh Plugin: Version: 3.0 [Click for support]
JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
User internet Plug-ins: (What does this mean?)
Picasa: Version: 1.0 - SDK 10.4 [Click for support]
Safari Extensions: (What does this mean?)
Grammarly Spell Checker & Grammar Checker
Audio Plug-ins: (What does this mean?)
DVCPROHDAudio: Version: 1.2
3rd Party Preference Panes: (What does this mean?)
Flash Player [Click for support]
Flip4Mac WMV [Click for support]
MacFUSE [Click for support]
MusicManager [Click for support]
Paragon NTFS for Mac ® OS X [Click for support]
Time Machine: (What does this mean?)
Skip System Files: NO
Mobile backups: ON
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 748.93 GB Disk used: 494.55 GB
Destinations:
Time Machine Backups [Local]
Total size: 1.50 TB
Total number of backups: 6
Oldest backup: 2015-03-02 10:02:50 +0000
Last backup: 2015-06-29 21:57:57 +0000
Size of backup disk: Adequate
Backup size 1.50 TB > (Disk used 494.55 GB X 3)
Top Processes by CPU: (What does this mean?)
7% com.apple.WebKit.WebContent(24)
4% MusicManagerHelper
4% nsurlstoraged(2)
1% WindowServer
0% com.apple.WebKit.Networking
Top Processes by Memory: (What does this mean?)
2.13 GB com.apple.WebKit.WebContent(24)
934 MB kernel_task
66 MB Safari
66 MB mdworker(8)
33 MB WindowServer
Virtual Memory Information: (What does this mean?)
15 MB Free RAM
7.98 GB Used RAM (612 MB Cached)
1.88 GB Swap Used
Diagnostics Information: (What does this mean?)
Aug 14, 2015, 09:42:25 AM /Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2015-08-14-094225_[ redacted].cpu_resource.diag [Click for details]
Aug 13, 2015, 07:06:38 AM /Library/Logs/DiagnosticReports/nsurlstoraged_2015-08-13-070638_[redacted].cpu_ resource.diag [Click for details]
Aug 12, 2015, 06:30:03 PM /Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_2015-08-12-183003_[r edacted].cpu_resource.diag [Click for details]