Ok here are somethings to check for to see what may be causing low FPS. I do have to eliminate these as possibilities.
This is ensuring that you've already done the following:
-Deleted/Moved your WTF, Cache and Interface folder outside of the WoW folder.
-Lowered your Shadows/Liquids/View Distance to Low.
-Multisampling is set to 1x
Additional things to try:
-Make sure your add-ons are uninstalled (I have to make sure, as I stated before disabling add-ons is not the same as removing them)
-Ran a repair from the Repair Tool inside the WoW folder.
-Try Capping your FPS in game to see if's a heating issue.
/console maxfps X
X can equal any number. I would say 30 for the first test and then 45. I would limit the test to 60. Nothing over 60 is really recommended, specially for portables. This keeps your GPU from overheating and provides smoother framerate in most cases.
-Do a SMC reset to ensure voltage is proper to the GPU.
Resetting the SMC
-Ensure you OS X is up to date by running Software Updates.
We recently changed the requirements, for our games, ensuring that the most recent OS version (like 10.5.8/10.6.7) is the required version.
-After your OS X is up to date, try running Repair permissions and Repair Disk for general maintenance:Please use the steps below to repair file permission settings on the hard drive.
1. Navigate to /Applications/Utilities/ and open Disk Utility
2. Select the hard drive the game is installed on
3. Select the First Aid option
4. Click on the Repair Disk Permissions button
Repair Directory Procedure:
1. Start from your Mac OS X Install disc: Insert the installation disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.
3. Click the First Aid tab.
4. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
5. Select your Mac OS X volume.
6. Click Repair. Disk Utility checks and repairs the disk.
**Always start up your computer from an Install or Restore disc when using Disk Utility to verify or repair your startup volume. Otherwise, you might see some disk error messages.**
-Disabled Time Machine
-Run Activity Monitor (Applications/Utilities) and make sure nothing else is running with WoW open (no chat apps, or games like Chess, etc).
-Make sure you have 10GB of free HDD space. This helps your Mac run smoother overall.
-If you don't have 4GB of RAM, try upgrading. This is in our recommended specs. The game evolves, so this is optimal for better performance.
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Why did the Shadow Priest's account expire? Too lazy to drop Shadowform to Renew.
Did all of those things and my gameplay is OK now. Don't know what it was specifically but I don't care! I just love that I can play normally again.