There's been some conversation in my fc that macroing skills will lower dps. I'm curious if this is true since I've been macroing my skills since day 1.

I use macros to make bloodletter or misery's end cast if its up like-
/ac "Straight Shot" <t>
/ac"Bloodletter" <t>
/ac "Misery's End" <t>
or
/ac "Heavy Shot" <t>
/ac"Bloodletter" <t>
/ac "Misery's End" <t>

Will this type of macro lower dps?
I always thought it would not since the last two skills are off the GCD. I recently returned to the game an found a new fc to raid with and was told this. I'd never heard it before, so I'm curious if I should be changing my actions.