Can you try the latest nightly build ? Where VLC 2.0.0 is in fact 2.0.2:
http://nightlies.videolan.org/build/win32/?C=M;O=D
If it still doesn't help then you can also try to:
- Disable time stretching in the audio preferences
Menu Tools -> Preferences -> Audio
- Force the number of FFmpeg threads to 4 or 2 or even 1
Menu Tools -> Preferences (Show Settings = ALL) -> Input/Codecs -> Video Codecs -> FFmpeg
- Use a faster resampler by setting the Sample Rate Converter type to Zero Holder Hold
Menu Tools -> Preferences (Show Settings = ALL) -> Audio -> SRC Resampler
After the changes save the preferences then exit and restart VLC.
And please be kind enough to report us what worked and what had no effect for you.