Now i have the 4690k.
I 've tested very much around, and i find out that i have framerate drops with short sound interrupts.
My Dolphin version: several of the latest Development versions
What i already tried:
- overclock my CPU up to 4,4 Ghz
- HLE
- internal ressolution to 1x (no AA and AF)
- Direct3D and OpenGL
Nothing helped!
Any ideas??
EDIT: I have this problem at all games i tried: Mario Galaxy 1+2, DKCR, Klonoa, New Super Mario Wii
Small stutters are normal when running them in a build for the first time.
Dolphin has to generate and cache the shaders a game uses. Subsequent playthroughs should be smoother.
I understand ....
Is it possible to generate the shaders without gaming?

I think i know the answer.
No. The shaders are generated based on what Dolohin needs to emulate for a game.
It's like "from now on you are the boyfriend of Megan Fox, but the first 10 years she looks like Steve Buscemi".
I downloaded Dolphin-x64 4.0 2626 today and played Mario Galaxy 2 (OpenGL, 3x native, 2x AA, with LLE) for two hours. I had NO framedrops, NO sound issues, NO issues due to generate shaders or something else. Absolutly NO Problems. Even at the second Boss, the worm who grab through the planet, runs constantly with full speed. At this point i had slowmotion with ~40 fps and strong sound issues with the i5 2400. So the 4690k is the ultimative CPU for Mario Galaxy.
What i also did: in Nvidia Preferences i forced triple buffering and Vsync (Vsync= on, no adaptiv). I guess the Vsync of Nvidia works better because the sound doesn't stutter with the Nvidia-Vsync when the shader generated. So i disabled vsync in Dolphin.
Specs:
i5-4690k@4.1 Ghz
GTX 570
I have overclocked the cpu with the Intel Extreme Tuning Utility. I increased the multipliers for all cores to 41x. The Temperature doesn't exceed the 60 Degrees Celsius (boxed cooler). I didn't try Mario Galaxy with stock Multipliers so i can't say if this would run just as well.
Now i will test DKCR.
EDIT: DKCR runs also without any performance issues or sound stutters. LLE, OpenGL, 3x native, 2x AA.