When needing to send signals out of the box
and returning it via an external audio interface
the signal needs to be adjusted for latency.
There are two utilities.
One is for send and return as an insert
and the other is to line up the other tracks.
The buffer values are for my rig so you may
have to adjust the buffer settings for your rig.
Using this tool you’ll be able to line up the signals
to sample rate precision.