MAcros for every Machinist.

[Adrasteia]

Do not use macros for DPS abilities. You are going to have a bad time.

More specifically, macros are exempt from being queued. In a normal situation, if I press an action button before my client has received the "all clear" from the server for my GCD finishing, it's queued up so that it immediately sends a signal to the server that I'm using an action as soon as the "all clear" signal is received. Macros don't have this capability, meaning that it has to wait until after the "all clear" signal has been received before sending the action use signal to the server. The delay is miniscule, but it adds up; I've seen DPS losses of 25% reported from using macros over doings things manually.