Well, each to their own. Personally, I do ROC because I enjoy the process of using the games strengths - the mechanics and encounters. Not interested in speed running, I'd rather take on those 5 Fallen Vandals then run past them. Of course, I don't take away your choice of play style, but perhaps communicate to the Fireteam and take a majority vote on what to do? There's little more frustrating that the team wipe tactic you mentioned, yet equally it must be annoying to realise you're the only one charging ahead. Call me diplomatic, but that seems like the more reasonable and approachable solution.