What kind of replay are you thinking of doing? 10000 frames is a lot of frames to cover, even with a 10 frame turn.
Moving at 1 frame gives out max realism doesn't it? I'm about to make a replay of 10,000 frames doing it is 10frames better or 1?
I just use 10 and I shift+space when necessary. Also, you can't do 10000 frames with each frame movement. Size limit etc.