Multiple wipes on each boss. People leave. Wait 10 to 30+ minutes for the raid to refill. Wipe again. People leave. Wait again for the raid to refill. Repeat ad nauseum.
Players were commenting that this LFR was harder than flex/normal with all the bad players and AFKs you have to deal with.
We cycled through so many different players in this LFR that we were unable to initiate votekicks anymore. We reached the point where we were unable to kick dead AFKs from the group.
Basically, this LFR = Heroic mode.