Evidence that Macros Do NOT Cause GCD Delay or Lost Casts

[ChonkGoblinSuprem]

Is it possible to set up a macro that will swap the one button out for 1-2-3 rotations like SE does in PvP? I saw that after playing PvP all week and that would be rad to open up some more crossbar space.

Thanks for sharing macro tricks. I use them a lot for crafting, but definitely do not use them to their fullest.