Audio Sync problem with Q10 Pro

[ianh]

I've got a strange audio sync issue with playing 5.1 videos on my Q10 Pro. It's up-to-date with the official firmware (2.04) and is otherwise unmodified. I've played about with all kinds of settings but nothing seems to correct the behaviour.

The issue seems to be that 5.1 videos sounds start slightly out of sync (which annoys me, but doesn't seem visible to certain others), goes slowly into sync after the first 10 minutes or so, then starts to go back out again later.

Stereo audio files work fine on the Q10, and all 5.1 files play without problems on my PC.

I've tried everything via the standard settings/options. Anyone seen this before, got any idea what's wrong?