The way the Optional Extension Plug-ins for Photoshop CS5 are installed creates performance issues when running Photoshop CS5 on Mac OS.
Determine if these plug-ins are the cause of the poor performance. If so, remove the plug-ins, reset your preferences, and then download and install the individual plug-ins you need, using the new plug-ins sets.
3. Scroll down through the System Info to the Plug-Ins section and see if you have any plug-ins that start with the word “Disable.” (For example, look for plug-ins labeled “Disable Get Info Comment,” “Disable OpenGL Drawing,” “Disable Scratch Compression,” and “Disable VM Buffering.”)
If these plug-ins are present, your computer is affected. Proceed to the next section.
To remove the plug-ins using Adobe Extension Manager CS5:
1. Quit Photoshop.
2. Open Adobe Extension Manager CS5, located in the Applications folder.
3. Locate the CS5 Optional Extension Plug-ins entry, and click Remove.
If you're unable to remove the plug-ins using Extension Manager CS5, you can also remove the plug-ins manually:
1. Quit Photoshop.
2. Navigate to the Applications/Adobe Photoshop CS5/Plug-ins/Extensions folder.
3. Drag these plug-ins to the trash:
- Overscroll Always.plugin
- Overscroll Floating Windows.plugin
- Force VM Compression.plugin
- Unlimited Clipboard Size.plugin
- Unlimited Preview Size.plugin
Do one of the following:
- Press and hold Alt+Control+Shift (Windows) or Option+Command+Shift (Mac OS) immediately after you start Photoshop. You are prompted to delete the current settings.
- Manually reset your preferences:
-- In Mac OS, open the /Library/Preferences folder, and drag the Adobe Photoshop CS Settings folder to the Trash.
-- In Window XPs, open the Documents and Settings/[User name]/Application Data/Adobe/Adobe Photoshop CS5/Adobe Photoshop CS5 Settings folder, and delete the Adobe Photoshop CS5 Prefs.psp file.
-- In Windows Vista or Windows 7, open the Users/[User name]/AppData/Roaming/Adobe/Adobe Photoshop CS5/Adobe Photoshop CS5 Settings folder, and delete the Adobe Photoshop CS5 Prefs.psp (32-bit version) file or the Adobe Photoshop (X64) CS5 Prefs.psp (64-bit version) file.
New Preferences files are created the next time you start Photoshop.
For more information on preferences, see the Help document on “Restore all preferences to default settings:" http://helpx.adobe.com/photoshop/using/preferences.html
Follow the updated instructions for installing the individual optional Extension plug-ins you require, using the instructions and new files here: http://www.adobe.com/support/downloads/detail.jsp?ftpID=4965
Important: These extensions can contradict one another. Take care when enabling them. A few are also specific extensions to particular hardware environments present when they were developed. Hard drive, CPU, and computer system advancements could have caused their use to become obsolete. If you're unsure whether they're necessary, use them with technical consultation from Adobe Support. Or consult advanced users on Photoshop User to User forum or other trusted source.