Well, ragdolls and other non-gameplay physics stuff is calculated on the fly, so it'll be different in each render. I've found that all gameplay issues (lag and other jankiness) seem to be recorded on the replays just fine.Blizzard said:As far as I'm aware, replays can occasionally be quite messed up in how things look. I think some people might have said there was something awesome in game, but then it doesn't show up in the replay, etc.