Jim Simon wrote:OK.
Try disabling the audio effects. Still go out of sync?
Disabling audio effects doesn't solve it, but strangely, turning off Insert seems to work. Let me report back after working a bit more with it.
thx!
EDIT: Okay, disabling Insert did fix it. I don't even know why it was on in the first place. Thanks for the help!

EDIT2: Okay, disabling Insert disables the whole insert plugins. Manual says:
Insert: Enables the routing of effects from Blackmagic audio interface hardware to outboard effect boxes and back again.
But it disables the internal software inserts?? Is this normal behavior?