Video / Audio Out of Sync - export

Greetings,

I read in these forums for over a week now and I can't seem to fix my problem, so I decided to try something myself.
My question is this:

-After creating a sequence and exporting in x 264 format, which corresponds to of the source medium (CBR, codec is not serious, he tried with several), it seems that my sound and/or video is desyncing.

I export in CBR while there should be no fluctuation of flow, but it seems that when the video is still standing for a while, say a loading screen, it gets shortened considerably and so the video runs in front of the audio.

This effect occurs not matter what I do. I tried a clean install, remove scratch files, clear the cache of media, etc.
The problem does NOT occur on Sony Vegas or even Windows Movie Maker.

It seems as if support screens still just gets their duration reduced, which doesn't make much sense.
Since I am absolutely ideas on what could cause this, I hope you guys can help me.

Concerning

EDIT:
Just to clarify the problem, the video runs faster than the audio. No matter if CBR or VBR, same as FPS source.

An absolutely horrible solution to this problem.
I leave Handbrake handle the file to convert the VBR to CBR (because the handbrake is great), so I can import without any problem in Adobe Premiere without the video running too fast.

Tags: Premiere

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