There is something missing.
* Do not engage the encounter in the very limited environment, where camera position can change unexpectedly (due to a nature of camera movement near walls) and can obscure your pov. You can get killed very quickly (even as tank in some cases) as you can easily miss an important "info" while camera gets wonky, with healer being stunned & tank at 40% hp.
Heroic HoR is the prime example of this!
I never understand why are people insisting to do it in the alcove. It annoying and frustrating for both tank and healer!
I have been here numerous time and only 1, once I was doing it in the open, at the entrance (as a dps dk) . After 2 wipes in the alcove I persuaded the others to do it there and ... we were successful on first attempt.
Having a open view of the encounter & surroundings and mobs engaged is THE KEY to overcome all odds game throws at the group (in 5m or raid)
In the HoR's alcove players are fighting against one additional random roll - auto camera movement near wall.