Here are some of the main steps to take if you want to speed up Pro Tools with Yosemite. 1. Disable Transparent Windows & Effects Transparent menus, windows, and title bars require processor power and memory to render. If you don't care for the effects, turn it off and save your resources!
Head to the Apple menu and in System Preferences go to “Accessibility”.
Choose ‘Display’ (it’s usually the default panel to open) and check the box for “Reduce Transparency” Disable transparency effects in OS X Yosemite.
2. Repair Permissions
It's recommended to repair permissions before an upgrade and then again after the upgrade is completed. If you already upgraded, reboot into recovery mode and repair permissions.
To start your computer in Recovery mode, restart your Mac and hold down the Command and R keys at startup.
3. Disable Widgets & Extensions in Notifications Center
Head to the Apple menu and in System Preferences go to “Extensions”.
Click on “Today” from the left side menu and uncheck all options you don’t need or care about – Weather, Stocks, Social, Reminders, etc Remove unnecessary extensions and widgets in Yosemite to speed things up.
4. Download CCleaner for MAC to clean up temp files.
5. Delete or move files from your desktop into documents, downloads or another folder setup on your drive.
6. Check the activity monitor for obvious CPU or Memory suckers.
Check out this Apple support page for info on how to use the activity monitor.
7. Reset the System Management Controller (SMC) - Power related issues
Turn off your Mac Plug in your Mac power cord into the wall socket Hold down the Left Shift + Option + Control + Power Button, simultaneously, for about 10 seconds By doing the key presses listed above, your Mac won’t power on but the reset will be done Release all keys after about 10 seconds and turn on and run your Mac like you normally do
For different Mac models, go to http://support.apple.com/en-us/HT201295.
8. Reset PRAM
Turn off your Mac Press the power button Press Command + Option + P + R in combination, all together, before you see the initial startup screen Press and hold until your Mac restarts Release the keys when you hear the familiar startup chime/bong sound that your Mac makes when it starts up (you may hear it twice which means that the PRAM has been reset) Your PRAM reset should be complete
For different Mac models, go to http://support.apple.com/en-us/HT204063.
9. Disable FileVault
If security isn't your # 1 priority, turn off FileVault! I would say that this could be the biggest lack of performance factor. Go to System Preferences > Security & Privacy > FileVault and make sure it is turned OFF.
10. Reduce Spotlight Items
Go to System Preferences > Spotlight and remove items you aren't interested in searching.
11. Free up Disk Space
Try to keep at least 40% free for optimal hard drive performance.
12. Upgrade Hardware
SSD hard drive, more RAM,
12. Disable or uninstall flash
Thanks for reading. Let us know if you have any questions or suggestions to add to this list!