I didn't save and load in FoV.
The leaving part may be it though, it's a long piece and obviously I don't stick around all the time to listen.
It's just odd it's ONLY that piece. All others play fine. And that it worked again once when starting FoV before immediately breaking again.
It would be interesting to hear what other pieces of music these people had issues with. Alas, your linked thread don't say.