Recoding with 15.2.2 mpg-file

I use Win10x64 Home.
I try Mega-codec 15.2.2.
I will convert .mpg-files(resolution:720x576)after cutting in new .mpg-file(with recoding):
When the people speek very fast in dialogues,the voices are not sychonized good.
Monolog are good!
Why not the dialogues?
It is a horror to listen the .mpg-files.
The Problem doesn´t exist with 15.20.
Why is it?
The conversion will be done by Ashampoo Movie Studio pro3.
Please help me.
Regards
Will-car.

Upload the file somewhere and send me the download link. You can do it in private message if needed.

For example:
http://www.sendspace.com or GoogleDrive or Dropbox.

[quote="Admin"]Upload the file somewhere and send me the download link. You can do it in private message if needed.

Here is the original file:
https://1drv.ms/u/s!Ago_9tSMyGP9Z8qTEpnbt6uVFvU?e=XIFtmK



Here is the cutting and recoding file:
https://1drv.ms/u/s!Ago_9tSMyGP9bDB0ftN3TzGLTNQ?e=ggTXQb
Regards
Will-car.

I have tried different players, which use different decoders, and they all have the same sync issue. I don't get any difference with 15.2.2 and 15.2.0 either.

So it is not a decoding problem, but the sync problem is in the file itself.