I am trying to get a group together, and we cannot agree on an edition of D&D. An argument being made by the pro-5e side is that 5th edition D&D goes faster than in revised 3rd edition, all other things being equal. I know that 3.5 can get crazy in the high levels, but since the game will be low level (starting at 3rd, running until maybe 6th) I don't expect God wizard mega-turns, 20-roll full attacks, and 'zilla buff routines.
What mechanical differences from D&D 3.5e result in 5e having faster combat at level 6 and below, if any? If there are only small differences at those levels, at what level range does the difference become noticeable?
Please disregard things like players' level of experience with each game, using grids, etc, since those have nothing to do with the system. Also I don't expect anyone to roll up with d2 crusader, Jacob's Ladder, or any other theoretical optimization builds, so don't worry about balance.