I believe that this was said on another thread and happens on Stable release stream too. I believe.TheVileOne wrote:
There seems to be an issue with replays. There are replays that have negative input frames playing and then when the first objects is approached there is a gap in the frames and then the cursor will just warp over to the first object. The replays don't have to start at 0 offset to create this behaviour, but near 0 is good enough. I will need to test more but I swear automatic lead-in time doesn't seem to happen anymore for replays that start very soon.
Replaying replays quickly also seems to have an effect on the replay itself. DT replays seem to be the most apparent. Look at Splinter's replay here. Sometimes when I leave the replay and load it again, the replay will start without any leadin and it will just warp the cursor to the start and other times it looks normal (albeit with less lead in time than on stable).
Edit: After analyzing the behaviour a bit more, the time at which the replay starts showing frames seems to be different upon load. Some times it starts a bit earlier before the notes appear and sometimes it is right before the notes appear and the movement frames before then are not shown. It seems very inconsistent whether it wants to show those frames to the first note or not in that replay for me. If it starts too close to the first note it just skips all the movement frames.