New Super Mario Bros runs at 75% speed

[Cutter]

Hello,

I have a Core i7 860 and a Radeon HD5870. I'm using the latest version of Dolphin to date (r7669) and the latest drivers. My problem is that while Zelda Wind Waker runs fine at 1920x1080, New Super Mario Bros Wii runs only at about 75%, even at 640x480. Is that a really intensive game, or are my settings incorrect? I've been told from people with lower specs than mine that they were able to run this game without any problem. I tried disabling VSync, lowering the resolution, using Direct3D 9 and 11, to no effect. Please help me chose the optimal settings to run this game faster.

Thanks.

[ExtremeDude2]

What revision? Are you using EFB RAM?

[Cutter]

What revision? Are you using EFB RAM?

Rev 7669.
What setting is that? (Most of my settings are set to default.)

[LordVador]

What revision? Are you using EFB RAM?

Rev 7669.
What setting is that? (Most of my settings are set to default.)

Graphics/Hacks/EFB Copy...

[Cutter]

What revision? Are you using EFB RAM?

Rev 7669.
What setting is that? (Most of my settings are set to default.)

Graphics/Hacks/EFB Copy...

Thanks! Disabling it made the game run perfectly smooth.