The way to calculate effective starting speed is as follows:
speed in panel * 100/ (100-tm gain %)
So a 300 speed BB8 in a group with 4 droids would have an effective speed of:
300 * 100/ (100-32) = 441.sakfdaodnfoi;
So his effective speed in this instance is a 441.
In order to figure out what speeds will allow you a starting turn order with effects like Sith Assassin or Jawa Engineer, FOO, etc. you would simply reverse the fraction. (note this is only needed when an activated ability gives out the tm. Ones that happen at the start of match like Zaul and BB8 don't have this limitation.)
Speed * (100-tm gain)/100
If my Jawa Engineer is a 300 speed in panel with his +50 speed bonus I use the formula:
350 * (100-45)/100= 192.5
So I can have a starting turn order where one guy is somewhere between 192 and 350, but everyone else would have to be 192 and below to have a starting turn order. Otherwise everyone gets full tm and the order is random.
Well that's that. May be more than you were asking for, idk.
