Currently, my audio is skipping when playing back TrueHD audio with PowerDVD 11.
I am pretty sure that I didn't use to have this problem. At first I thought it is related to 3D playback.
But, as it turns out I have the same issue when playing back in 2D. The problem goes away when playing back in 5.1.

I am doing bitstreaming form my ATI card to the receiver. I can see on the receiver, that the receiver thinks it lost the audio signal for a short moment. Sometimes, the audio skips every ~ 4 seconds. Sometimes less frequent.

Not sure how to debug this issue.

My setup:
Windows 7 64 bit (all latest updates)

PowerDVD 11 Ultra (just updated with latest patch as suggested)
Audio/video is all pass-through

Gigabyte GA-EP45-UD3P mobo
Intel Core2 Duo E7500 Wolfdale 2.93GHz
HIS H657H1G Radeon HD 6570 1GB 128-bit DDR3 (with the latest AMD driver - no processing)