Yosemite very laggy after installation

Hello, I have the same problem with the same mac (2012). I updated yesterday and sometimes when I'm browsing the internet using safari or chrome i notice some stutters and lags. three times now my mac has completely frozen while watching a movie in netflix and the beach ball cursor starts spinning for about 2 minutes and closes safari. Also, when I open a folder from my desktop the folder animation stutters and then opens. I've never had any of these issues with Mavericks; so is it better to just downgrade?

I have a macbook pro mid 2012, running Yosemite.

Hello, I am using a MacBook Pro Mid 2014 and I have a bad performance ever since I have the 10.10 Installed. Really hope to get a hot fix soon.

Hello, im having problems with my MacbookPro mid 2012, and i think it has something to do with the discrete graphics card (gt650m 512 mb).

The finder is very laggy, especially when using the grid view and the rubber banding effect, the stacks become also laggy when opening any app that uses the discrete card, for instance photoshop and i don't think the problem is the lack of memory or resources because everything else is smooth, some animations are the same as mavericks and didn't have any problem with safari so far. hope there is a hotfix or something soon.

ps: sorry everyone for my crappy english.

I have found the exact same problem with my Early 2011 15" Macbook Pro. I have found that my discrete graphics card (AMD Radeon HD 6490M) is causing the problem. When I connect an external monitor, it switches from integrated graphics to discrete graphics and then the UI is insanely laggy and slow (detected with gfxCardStatus app). Unfortunately, the external monitor can only be handled by my discrete graphics chip and not the integrated one.

Please give us decent discrete graphics drivers, Apple!

I am experiencing a similar problem and have done some pretty thorough debug to determine the problem. Unfortunately I believe a fix lies within the graphics card driver (so we will have to wait for a release from Apple).

I have a Macbook Pro (15-inch, Early 2011), 2GHz, 16GB 1333 Ram, AMD Radeon HD 6490M 256mb graphics card.

To be clear of my problem, the laptop operates normally standalone. As soon as I plug in to the Thunderbolt display, everything appears laggy (as if the driver isn't installed)

1) Permissions repair

2) Reset PRAM and NVRAM

3) Disabled energy saver so that the laptop is always running discrete graphics. When the laptop is not plugged into the Thunderbolt display, it operates normally (multiple 1080p videos, window dragging flawless). When plugged into Thunderbolt, the lag is apparent (dragging windows is jittery etc)

Then I brought it to the Apple store for some diagnosis with them

4) Plugged in the store Thunderbolt display and lag appeared with the Genius

- This tells me that it's not my Thunderbolt display

5) Disabled startup items

6) MRI hardware test all passed

7) Booted into a copy of Mountain Lion. When plugged into the Thunderbolt display, the laptop responded normally (no lag, just like before Yosemite)

- This tells me that there is nothing wrong with discrete graphic card in the laptop

8) Ran the laptop in Target Disk Mode, chained it to a Macbook with a Nvidia discrete graphic card and the laptop responded normally.

- This tells me that there is nothing wrong with my laptops startup configuration.

- This also is a good indicator that it's a graphic driver issue.

I'm really running out of options on what to try. I'm thinking of hooking up an external HDD, installed Yosemite fresh on that, and she how it responds. At the moment, my diagnosis is that it's a problem with the AMD Radeon HD 6490M driver and the Thunderbolt driver. Unfortunately since the drivers are built into the OS, it seems a little difficult to reinstall or rollback a driver.

Please, follow this guide in order and see if your problem is resolved.

Guide: How to solve Yosemite memory leaks and CPU usage

This did not resolve my issue. Thank you though.

Activity Monitor - Mavericks

Activity Monitor in Mavericks has significant changes

Performance Guide

Why is my computer slow

Why your Mac runs slower than it should

Things you can do to resolve slowdowns see post by Kappy

Try running this program and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor. Please use copy and paste as screen shots can be hard to read.

Etrecheck – System Information

EtreCheck version: 2.0.6 (91)

Report generated October 23, 2014 at 1:13:21 PM PDT

Hardware Information: ℹ️

MacBook Pro Intel Core i7, 15" (Early 2011)

MacBook Pro - model: MacBookPro8,2

1 2 GHz Intel Core i7 CPU: 4-core

16 GB RAM Upgradeable

BANK 0/DIMM0

8 GB DDR3 1333 MHz ok

BANK 1/DIMM0

8 GB DDR3 1333 MHz ok

Bluetooth: Old - Handoff/Airdrop2 not supported

Wireless: en1: 802.11 a/b/g/n

Video Information: ℹ️

Intel HD Graphics 3000 - VRAM: 512 MB

AMD Radeon HD 6490M - VRAM: 256 MB

Color LCD 1680 x 1050

Thunderbolt Display 2560 x 1440

Cinema HD 1920 x 1200

System Software: ℹ️

OS X 10.10 (14A389) - Uptime: 0:22:19

Disk Information: ℹ️

INTEL SSDSC2BW480A3 disk0 : (480.1 GB)

S.M.A.R.T. Status: Verified

EFI (disk0s1) <not mounted> : 210 MB

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

Mac HD (disk1) / [Startup]: 478.91 GB (170.77 GB free)

Core Storage: disk0s2 479.24 GB Online

HL-DT-ST DVDRW GS31N

USB Information: ℹ️

Apple Inc. FaceTime HD Camera (Built-in)

Apple Inc. BRCM2070 Hub

Apple Inc. Bluetooth USB Host Controller

Apple Inc. Apple Internal Keyboard / Trackpad

Apple Computer, Inc. IR Receiver

Logitech USB Receiver

Apple Inc. Apple Thunderbolt Display

Apple Inc. Display Audio

Apple Inc. FaceTime HD Camera (Display)

Western Digital My Book 1234 36.1 MB

S.M.A.R.T. Status: Verified

disk2s0 (disk2s0) <not mounted> : 31 MB

disk2s0s1 (disk2s0s1) <not mounted> : 32 KB

WD Unlocker (disk2s0s2) /Volumes/WD Unlocker : 4 MB (0 B free)

Burr-Brown from TI USB audio CODEC

Thunderbolt Information: ℹ️

Apple Inc. thunderbolt_bus

Apple Inc. Thunderbolt Display

CalDigit, Inc. Thunderbolt Station

Gatekeeper: ℹ️

Mac App Store and identified developers

Kernel Extensions: ℹ️

/Applications/Toast 10 Titanium/Toast Titanium.app

[not loaded] com.roxio.BluRaySupport (1.1.6) Support

[not loaded] com.roxio.TDIXController (2.0) Support

/Library/Application Support/VirtualBox

[not loaded] org.virtualbox.kext.VBoxDrv (4.3.12) Support

[not loaded] org.virtualbox.kext.VBoxNetAdp (4.3.12) Support

[not loaded] org.virtualbox.kext.VBoxNetFlt (4.3.12) Support

[not loaded] org.virtualbox.kext.VBoxUSB (4.3.12) Support

/Library/Extensions

[loaded] at.obdev.nke.LittleSnitch (4216 - SDK 10.8) Support

/System/Library/Extensions

[not loaded] com.FTDI.driver.FTDIUSBSerialDriver (2.2.14) Support

Problem System Launch Agents: ℹ️

[failed] com.apple.security.cloudkeychainproxy.plist

Launch Agents: ℹ️

[running] at.obdev.LittleSnitchUIAgent.plist Support

[not loaded] com.adobe.AAM.Updater-1.0.plist Support

[loaded] com.adobe.CS5ServiceManager.plist Support

[running] com.orbicule.UCAgent.plist Support

Launch Daemons: ℹ️

[running] at.obdev.littlesnitchd.plist Support

[running] com.backblaze.bzserv.plist Support

[running] com.orbicule.uc.plist Support

User Launch Agents: ℹ️

[running] com.backblaze.bzbmenu.plist Support

[failed] com.facebook.videochat.[redacted].plist Support

[invalid?] com.google.GoogleContactSyncAgent.plist Support

[running] com.pia.pia_manager.plist Support

[running] com.spotify.webhelper.plist Support

[loaded] com.valvesoftware.steamclean.plist Support

[not loaded] org.virtualbox.vboxwebsrv.plist Support

[running] ws.agile.1PasswordAgent.plist Support

User Login Items: ℹ️

Flux Application (/Applications/Flux.app)

Dropbox Application (/Applications/Dropbox.app)

Spectacle Application (/Applications/Spectacle.app)

WDSecurityHelper Application (/Applications/WD Security.app/Contents/WDSecurityHelper.app)

WDDriveUtilityHelper Application (/Applications/WD Drive Utilities.app/Contents/WDDriveUtilityHelper.app)

SpiderOak Application (/Applications/SpiderOak.app)

Internet Plug-ins: ℹ️

JavaAppletPlugin: Version: Java 8 Update 25 Check version

o1dbrowserplugin: Version: 5.4.2.18903 Support

Default Browser: Version: 600 - SDK 10.10

Flip4Mac WMV Plugin: Version: 3.2.0.16 - SDK 10.8 Support

QuakeLivePlugin: Version: 0.1.0.520 Support

Silverlight: Version: 5.1.20913.0 - SDK 10.6 Support

FlashPlayer-10.6: Version: 15.0.0.152 - SDK 10.6 Support

Flash Player: Version: 15.0.0.152 - SDK 10.6 Support

QuickTime Plugin: Version: 7.7.3

googletalkbrowserplugin: Version: 5.4.2.18903 Support

SharePointBrowserPlugin: Version: 14.0.0 Support

MeetingJoinPlugin: Version: (null) - SDK 10.6 Support

Audio Plug-ins: ℹ️

DVCPROHDAudio: Version: 1.3.2

3rd Party Preference Panes: ℹ️

Backblaze Backup Support

Flash Player Support

Growl Support

Java Support

MacFUSE Support

MusicManager Support

Perian Support

Time Machine: ℹ️

Skip System Files: NO

Mobile backups: OFF

Auto backup: YES

Volumes being backed up:

Mac HD: Disk size: 478.91 GB Disk used: 308.14 GB

Destinations:

Vincent External [Local]

Total size: 3 TB

Total number of backups: 27

Oldest backup: 2014-09-09 01:26:38 +0000

Last backup: 2014-10-18 22:33:28 +0000

Size of backup disk: Excellent

Backup size 3 TB > (Disk size 478.91 GB X 3)

Top Processes by CPU: ℹ️

31% WindowServer

7% Google Chrome

4% Little Snitch Agent

3% bzfilelist

0% Mail

Top Processes by Memory: ℹ️

241 MB Mail

223 MB mds_stores

189 MB Google Chrome Helper

172 MB Google Chrome

141 MB com.apple.WebKit.WebContent

Virtual Memory Information: ℹ️

8.51 GB Free RAM

5.21 GB Active RAM

1.59 GB Inactive RAM

1.86 GB Wired RAM

2.47 GB Page-ins

0 B Page-outs

Disable Windows transparency seemed to resolve most of my issues.

Maybe it's an OpenGL issue with the AMD Radeon cards?

http://www.howtogeek.com/199201/how-to-disable-window-transparency-in-os-x-yosem ite/

Disabling the transparency doesn't make a difference on my Radeon HD 6490 M. The UI remains very laggy; nothing like the integrated chipset. Please update your drivers, Apple!

I never had it turned on and i still lag, and have slow boot up times?

I'm also using an AMD 6490M and have really slow response when I'm using my external monitor. A reboot helps for about an hour or two. I get lots of abnormal UI flickers with Safari as well(only when the external monitor is attached). I'm assuming this is when the discrete video is engaged.

This only started happening when I installed Yosemite. This was an upgrade from Mavericks. As a test, I grabbed a new hard drive and installed Yosemite on that (not an upgrade), and then tested the OS. Even with a fresh install, the system response degrades with the external monitor plugged in. When my monitor is not plugged in, the system is fine. And yes, I tried all the de facto troubleshooting steps. SMC, Disk Repair, P-RAM, sprinkled fairy dust, jumped on one foot, etc.

I was happy with Mavericks, so I'll go back to that until Apple can fix this issue.

I was having the same issue, and, for me there was a lot of mis-information. What helped was a comment in another thread to reset the SMC. It was an immediate difference and took all of 2 minutes. I never had fireVault turned on (fdesetup status signifies that it is off). If all you're getting is slow UI (without any flicker, weird spots on the monitor, etc), try SMC reset: Intel-based Macs: Resetting the System Management Controller (SMC).