So replays have 1 minute lag, the FAF lobby seems to post the replay link
1 minute after the match has started. However, it can take up to five minutes
for the link to become usable.
Sometimes, after five minutes of waiting, the replay link becomes usable
(aka downloadable with Replay Manager, and also plays if you click on it directly in lobby.)
But then the download stops even as the match is still ongoing. I remeber back then,
REplay Manager will slowly stream the replay file as the match goes on.