VLC 2.0.1 suddenly stutters reading BDs

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Hi. I already searched how to fix the following behavior but without results.

Suddenly VLC seems to have Problems reading from my BD-Drive. It plays normally until the first 'faster' scenes - usually already in the publisher's logo. From there on it begins to stutter - playing, caching, playing, caching... The LED on the drive blinks in the same rhythm. You also can hear the read, stop, read rythm. Sometimes when I jump later into the movie, play some seconds and jump back to the beginning everything is fine for the rest of the movie - but this behavior is not surely reproducible.
There weren't any problems some weeks ago with the same BDs (but different VLC version?). So I already rested the settings to default but without results.
Ripping the BD and playing it from HD works fine. MPC HC works fine with my BD-Drive too.

Do you have some ideas what could be wrong here?

System: Windows 7, VLC 2.0.1 (64bit/32bit)
Drive: LiteOn Blu-ray ROM iHOS104-37
CPU: Intel i5-2500K
RAM: 8GB-DDR3
GPU: Intel HD Graphics 3000 (on CPU)