Question for people with long-term SMN experience!

Sometimes (when on OBEY) while Garuda-egi is already engaging the enemy and auto attacking, it just doesn't feel like responding to that AERIAL SLASH, CONTAGION and ENKINDLE command, even though I see the skill button lighting up and indicating that it is being pressed. My SMN mostly isn't performing any other skills during that time. So I just end up standing there, spamming one of them until they are actually executed.

Why is this happening? Am I timing it badly during a pet attack animation or? Anybody experienced this?

Usually pet skill execution works fine, but sometimes it seems like the pet is stubborn :/

Executing any of the above skills before Garuda-egi starts auto attacking is mostly instant, without the issue mentioned earlier.