Reporting stuttering issues throughout gameplay on all beatmaps/songs on Cutting edge. This problem is not present on stable.
FPS is fine, 1900+ on unlimited or the limit if capped to 60/120/1000. FPS doesn't drop when stuttering, at least not on the FPS display in the bottom right. I've tried OpenGL and DirectX with no difference between the two - only I get lag spikes when opening songs with OpenGL, but that's irrelevant to my issue.
Video of the issue. The stuttering is this bad regardless of whether I am recording or not,
might want to wait for 720p60 to process before watching so you can actually see what I'm talking about processed. (Audio muted instantly lol)
It's hard to see it in the video, but you can see it best at about 3:55, especially at about 4:05.
Specs:
i7 4790k
8GB RAM
eVGA GTX770 2GB (latest stable drivers)
120GB SSD (Osu!'s install drive)
EDIT: Seems to be fixed as of b20141211.12.