2010 MBP slow after Yosemite

while the PRAM and SMC reset initially did the trick, it quickly went back to sloggy, sluggish Yosemite again.

Followup: ran a hard drive benchmark from https://itunes.apple.com/us/app/blackmagic-disk-speed-test/id425264550?mt=12

Running Mavericks my score would be 85-100MBps and now with Yosemite it's 50-65MBps. Has anyone else run similar tests? My guess is that in Yosemite Apple has changed sata settings. This would affect both HDDs and SSDs but probably not PCI-e flash storage on newer Macs.

seems my networking is considerably slower too now. i'm hosting a Plex server, and now accessing videos remotely is insanely slow compared to what it was on Mavericks. I've went from 8mps videos smooth as butter (could even go higher) to 1mps and it still is choppy and cuts in and out.

My Macbook Pro is now unusable..........pinwheeling on boot-up

Macbook Pro 2010 RIP with Yosemite

I found that killing the transparency fixed a large part of my problems. Given the amount of noise on the web at the moment though, it seems this OS is kinda buggy.

Following the steps that outlined on page 1 fixed the issues on my 2010 MacBook Pro (8 GB RAM) and on my late 2011 iMac.

I also own Clean My Mac 2 and running that regularly helps too.

I have the same issues with my Macbook Pro 2010 15 GT330M 8GB RAM 256SSD. After clean install of Yosemite, I had graphic glitches and the whole system was very slow and laggy. That's why I am back to Mavericks, but now I can't use iCloud bei Pages and Numbers (iWork). I am very disappointed with Apple! iOS8 and Yosemite not the best Product anymore.

Had the same problem, finally realized that the FileVault Encryption was struck at 19%. Speed back up to normal after I disabled FileVault using terminal command - sudo fdesetup diable

To check whether the FileVault is the culprit, go to System Preferences --> Security & Privacy --> FileVault to see if encryption is in progress.. For me the blue bar was less than a quarter with status 'estimating time remaining'..

Then open Terminal and type in: sudo fdesetup disable

It will then ask for the admin password (to be it asked twice), then it was disabled... Back to normal life again..

Here is my terminal log for reference:

Last login: Tue Oct 21 23:05:13 on console

Gowthams-MBP:~ asgowtham$ fdesetup status

FileVault is On.

Encryption in progress: Percent completed = 18.80

Gowthams-MBP:~ asgowtham$ fdesetup status

FileVault is On.

Encryption in progress: Percent completed = 18.80

Gowthams-MBP:~ asgowtham$ fdesetup status

FileVault is On.

Encryption in progress: Percent completed = 18.80

Gowthams-MBP:~ asgowtham$ sudo fdesetup disable

Password:

Enter a password for '/':

..fdes.

FileVault has been disabled.

Gowthams-MBP:~ asgowtham$ fdesetup status

FileVault is Off.

I don't think it's just FileVault problem, it's especially because of bad drivers for NVIDIA 330m. If I try to set the finder window to FULLSCREEN, I have big graphic glitches, the same thing with youtube video and fullscreen.

Reduce transparency solve my problem with MBP mid-2010, It's faster now.

reduce transparency - I tried it also, but it didn't help to me!! 😠

Just checked the FileVault thing out for myself and lo and behold it was frozen halfway through the setup. I'll test things out now that it's disabled and see if that fixed things for me. Thanks for bringing that up, @asgowtham, I had no idea it even existed!

From a terminal session I did "

sudo 

fdesetup disable

" this turned off FileVault and started the decryption process.  I am seeing some increased responsiveness.  I can actually see letters as I type them.  5 hours of decryption to go.  Apple never should have turned the default to FileVault to ON. 

Disabling FileVault immediately had a huge impact for me. Virtually all the issues that I was experiencing are solved. I don't know why they thought it was a good idea to make FileVault encryption opt-out rather than opt-in, but it's pretty safe to say that it was a pretty big mistake on their part.

I would not advise using FileVault if you're still using a HDD.

FileVault will stomp all over your computer's performance and responsiveness. Think about what it's doing - it's actively encrypting and decrypting reads & writes on a spinning platter. The platter is already spinning slowly enough, now you're introducing a secondary translation set that will slow things even further.

Use it on a HDD equipped system if you truly feel you need a secondary boundary layer of security for your data.

If you're on a SDD, feel free to use it without any apprehension. The performance hit is almost imperceptible on a SATA 2 and especially a SATA 3 equipped system.