I'm gonna say something unpopular: I don't like to rush.

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My response might be pretty basic or bland but here it is... I main a Dark Knight and second main a Bard so I can kinda get where both sides might be coming from. Now, I don't like to force playstyles but this is my opinion.

If it is a story dungeon, then by all means... Feel free to take your time if your new to it. Enjoy the content.
If it is a non story dungeon, and you have ran the content before. I would appreciate faster pulls (though I wont complain if you don't) Bard can be boring on small pulls.

Now, if your unfamiliar with the dungeon and now sure how far to take your pulls. Just say "Im new to this dungeon, Ill try large pulls but we are probably gonna die". Everyone else will appreciate the attempt. (unless the healer is not up for it, always check with them before a run).

Finally, and I think this might be the most important thing... If you are asked to speed up or to adjust your playstyle, please avoid be rebellious just to spite the group or start any arguments. Just say "Can do" and move on. Everyone will leave the dungeon a happy camper this way and not spend the rest of the day POed.

That's all I got to say. Thanks for taking the time to read my opinion.