Recorded Tracks not synchronised

[Johannes]

That is true for your local files, but cannot be true for the remote files, which JamKazam automatically uploads and then downloads. Those will eventually appear in that folder, too (I am on Mac, but the principle is the same).
That's what makes the recording function of JamKazam so valuable, instead of just giving you the stream mix it gives you the original recordings, including the remote ones.