This is probably late to the party, but you absolutely can get ZERO points for the time element of the score and still make a 4 or 5 star run. It does require you to lookup stuff on wowhead and that sucks, but the information is out there (just not in game, so bad on Blizz). However, given that this info is pasted in the 4-star thread and on wowhead, if you choose to ignore it even though you say you want a 4-star run, then that’s on you. Again, sucks that it’s not explained in-game, but use the resources available to you to get what you want/need.