Originally Posted by
RinchanNau
I would recommendation getting below 600. I generally use my first invigorate when I hit 540 (or less) TP. I will be at 540 after a GCD, hit invigorate and get to 940, and generally before my next GCD the next +60 TP tick will happen and bring me to 1000. After that, in an extended fight, it would be whenever it comes off CD provided I am 540 TP or below.
Sometimes it may not be exactly 540 depending on straighter shot procs and stuff like adds adding to dot usage. but anywhere in the 500-540 range should be good. If you invigorate at 550+ you are likely going to lose a little TP depending on when the next tick happens. For instance, if you have 560 you will invigorate to 960 and the +60 TP tick will still only bring you to 1000. A loss of 20 TP.