Recorded Tracks not synchronised

[SteveW]

I just had another look at the tracks in my DAW--the files are the ogg files whose names are prefixed with 'LocalTrack'. I'm taking the rhythm guitar track from participant A and the bass track from participant B, as these are quite easy to synchronise precisely. The first song starts at about 1min 6sec and I am aligning the tracks as exactly as possible (by eye and ear) at this point. The second song starts at 11 min 33 sec and, by that stage, the bass is noticeably ahead of the guitar.

The final track of the session that includes both instruments starts at 1 hour 18min 13sec for the bass and 1 hour 18min 15.5sec for the guitar. So, by this stage, the tracks have drifted apart by about 2.5 sec!

Curiouser and curiouser!