Results vary. If your party is paying attention and sees you actively dps, usually 2 or 3 comms at the end of a run
On the other hand, if they are tunnel visioning their dps, and tank hp is ping ponging from cleric stance dance, it makes it look like you got a sloppy healer and the tank leaves with the commendations.

I used to get a lot of comms from doing dps on my sch pre-HW, but lately it's usually just 1...2 if lucky. If I just straight up heal, it's usually 2 but that kind of behavior puts me to sleep on sch so I rather not queue up at all if I'm feeling lazy to dps