I have heard it said that the Lee Enfield ejects better when cycled fast. I have had the odd occasion when I open the bolt too slowly that the case does not eject properly. But that's just because I'm being lazy and loosing momentum on the rearward pull.
Personally I have not tried the mad minute and have no interest in doing it. I'm more interested in how accurate the rifle is. I see no reason to beat it up with a mad minute (plus it's a lot of reloading)