I have a pretty simple Cubase project that goes out of sync after looping an 8 bar passage after about 1 minute.
The Virtual Instruments stay PERFECTLY in sync, while audio loops that are in groups go out of sync!! WEIRD!
So drum audio samples that are grouped together into 4 bar groupings go out of sync. 
Anyone else experiencing this?
PC: Win 7 x64 sp1
- 16gb Ram
- i5 2500k
- Yamaha N12
- Cubase 7.0.2
Loaded things in project:
- 1x Kontakt (Imperfect Samples - Steinway ) using 4.13gb Ram
- 1x Battery
- 4x Massive
- 1x Padshop
- 1x Halion Sonic SE