It's not really about speed running.
It's more along the lines of how you use your combo. Let me give some "basic"
Pointers that I have picked up along the way. Maybe you can adapt this into your play style.

(After pulling, ie, shield lob, into flash)

1st off, I made macros that can mark targets as 1 2 and 3. (These are 3 different macros)
2nd off, I mark target 1, then I do fast blade -> into savage blade
3rd, I target a different mob (either by tabbing, or manually clicking the monster list), mark it as 2, then I spirits within.
4th, I target a different mob again, and mark that as 3 and rage of halone that mob.

What these steps are for, is to set the pace of the fight, for my dps to understand my fight intent, as well as put agro on everything so the healers can heal me through-out the fight.
After this rotation, I flash, and continue he steps without marking.