Emulator

Game Name?

Metroid Prime 2 Echoes

Game ID?

G2MP01

What's the problem? Describe what went wrong in few words.

This has been posted on the wiki regarding severe refraction slowdown when water lands on the visor or coming out/entering water in first person mode. FPS bombs to around 11 FPS or worse in the Torvus Bog region.

What did you expect to happen instead?

Slick constant FPS. There's another ticket on here to address the same in MP1 Tallan Overworld region and Ridley boss fight.

What steps will reproduce the problem?
[Don't assume we have ever played the game and know any level names. Be as
specific as possible.]

1. Enable OGL Backend
2. Travel to the Torvus Bog Region (can provide a save file if you need it)
3. Look up and around whilst it's raining, enter/exit the water in FPS mode, try battles in the area, it's unplayable.

Dolphin 3.5 and 3.5-367 are old versions of Dolphin that have
known issues and bugs, so don't report issues about them and test the
latest Dolphin version first.
Which versions of Dolphin did you test on?

4.0.750 x64

Does using an older version of Dolphin solve your issue? If yes, which
versions of Dolphin used to work?

This is a known issue, addressed on the wiki.

What are your PC specifications? (including, but not limited to: Operating
System, CPU and GPU)

Win7 Pro SP1 x64
Intel i7 3820 LGA2011 @ 4.3GHZ
16GB DDR3 RAM
2x Nvidia GTX 680's in SLI

Are you using the 32 or the 64 bit version of Dolphin?

X64

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)
[Upload big files to a hosting service and post links here!]

Captured bellow :-

http://www.youtube.com/watch?v=-mCKZ_SZOiI

[Do not attach files to this issue. Upload them to another site and
link here. Use imgur.com for images and pastie.org for logs.]