Originally Posted by
Archimtiros
Follows the same rules as we talked about for using CS. You can delay slightly for trinket procs but shouldn't delay much more than a few seconds. DR makes no difference between Execute time or not, don't use during CS; I like to use it right after CS ends, using during trinkets/pot assuming it won't cause you to significantly delay (usually ~10 seconds, if you think its going to be your last DR, ie: fight ends within 40 seconds, feel free to delay as long as you need for procs, etc).
Edit: Also feel free to delay it a GCD if you are rage capping for some reason, but that should be very rare.