great computer, slow dolphin with windwaker

[Garteal]

You might also want to do the following.

In the ini setting, the game is set to run the game with EFB Copies to RAM.

Right-click on the game in Dolphin, then hit properties.
In the window that pops up, hit edit config, which you can find at the bottom-left of the window.

In the ini file that opens, at the bottom, you should see these three lines:

Code:

EFBAccessEnable = True
EFBToTextureEnable = False
EFBCopyEnable = True

Erase them, save the file, and see if it worked.