I already tried SMC reset but it is still the same way.
With the MBPretina's customizations and the 1gb graphics card, I expected the game to run on at least high. Am I wrong?
Please try removing all addons and temp files and see if that helps. Disabling addons isn't the same, and can affect performance.
Reset the temp files
1. Navigate to /Applications/World of Warcraft/
2. Delete the Cache folder.
3. Move Interface and WTF to the Desktop.
4. Launch WoW.
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