When i go to change my wallpaper it takes long to load till my mbp becomes non responsive help
Quit System Preferences if it's running. In the Finder, hold down the option key and select Go ▹ Library from the menu bar. From the Library folder, delete the following item, if it exists:
and move the following item to the Desktop:
Launch System Preferences and test. If you still have the issue, put the item on the Desktop back where it came from and post again. Otherwise, delete the item.
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