Super Mario Galaxy 2

Super Mario Galaxy 2 is a platforming video game developed by Nintendo for the Wii. It was first announced at E3 2009, and is the sequel to Super Mario Galaxy. It was released in North America on May 23, 2010. The game's levels are galaxies filled with minor planets and worlds. While its gameplay is based on that of its predecessor, the game was updated with gravity effects and new power-ups. It is the fourth original 3D platformer in the Mario series, after Super Mario 64, Super Mario Sunshine, and Super Mario Galaxy.

Wii Remote Lag When Collecting Starbits
The Wii Remote slows down when collecting starbits. To remedy this, go to Dolphin Controller Configuration Window and disable (untick) Enable Speaker Data and this will mute the Wii Remote speaker, fixing the starbit slowdown problem. Seems like it might have something to do with the computer's Bluetooth dongle not granting enough bandwidth for the Wii Remote to receive the sounds and transmit controls at the same time. It's a problem bound to PC hardware and driver, you can also try Bluetooth Passthrough.

Problems
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Wii Message Board Images
After defeating Bowser in the sixth world, as well as after reaching the 242nd star, a picture each is pinned to the Wii Message Board. These pictures will be saved as black if "Store XFB copies to textures only" is active. To display the images correctly, "Store XFB Copies to Textures Only" must be disabled before the image is created.

Boss Roars
Boss roar effects are not visible. See. Fixed by

Yoshi's tongue not working with Direct3D 12
With the old Direct3D 12 video backend from Dolphin 5.0 stable, the red circle around edible items sometimes doesn't appear. Using a save state and restarting the emulation fixes it temporarily. The old Direct3D 12 backend was removed in. Additionally, the new Direct3D 12 backend introduced in doesn't have this issue.

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HD Texture Pack
Super Mario Galaxy 2 HD Texture Mod - Dolphin Forum Thread

Background at Bowser's Galaxy Generator
Depending on the setting of the internal resolution, as well as the anisotropic filtering, the background in Bowser's galaxy generator is not displayed as on console. To display the background like on console the internal resolution as well as the anisotropic filtering must be set to 1x.

Bloom
Bloom effects do not render correctly with Internal Resolution (IR) > 1. Disable Scale EFB Copy to fix this.

Higher IR Affects Fog
Using IR > 1x causes fog to be rendered at inappropriate depths. Native internal resolution must be used to avoid this. This can be seen on the save select screen, the ship post the first level, and other areas. Refer. Fixed by, see the Oct 2017 Progress Report for details.