Audio-Video looses sync with DXV codec

[stillstand]

Hey there,
I've got the problem, that when I render videos in DXV its doesnt stay in sync with audio. after a while it totally looses sync. This happens no matter, if I use embedded or non_embedded audio. I use the timeline setup.
If I use another codec, such as H264, it stays in sync without any issues.
but I definitely want to use DXV, since it runs videos much smoother in arena.

What could be the problem?

Any help is highly appreciated. Thank you already.

[Joris]

What compression are you using for the audio?

[stillstand]

lossless WAV 48khz / 16 Bit

[Joris]

Hmmmm. That should all be correct.

Could you send us these files at mail@resolume.com? If they're big, you can use a transfer service. Also, could you give an indication on how we can check them for sync? Ie, after how long approximately does it go out of sync? Do they contain lipsync or are there specific moments we should check?