Usually my static tank asks at the start of the run if it's ok to skip stuff. If any of the 2 strangers said no, we kill everything. No biggie.

However, I've been in many solo roulettes where the tank just doesn't communicate and no one said anything, then started doing speed run, pulling all shits, without even waiting for my MP (I'm WHM), even at boss room (Stone Vigil Hard, for example) which then resulted in me having no MP and letting the tank die when we had 3 Aevis on us at a time. I really hate that. At least say something or watch healer's MP when you want to speed run. Diving nose first into a battle, blindly and brainlessly, is actually counterproductive.