The quality of tank players has dropped drastically, most don't bother using cds anymore, healers also have so many ogcds they can pop them off when tank hp is lower.

Finally it is probably a bit of rust. Healer's have been complaining all shb that healing is too easy and mind numbing with between 60 and 80% of fights being spamming broil/malefic/glare. Replace that with aoe for dungeon mobs

remember though, you don't need to top them off, just keep them alive. Its on the tank to dodge aoes