I am tentatively filing this as a bug report. Perhaps the community can weigh in. Basically I find the ultimate key unresponsive in combat, specifically the resto ult. It's gotten to the point where I am more inclined to alternate Healing Ward and Harness Magicka, when focused in PvP, than trying to activate that unreliable ult. I typically end up hammeriing the ultimate key, and I can see it flickering on the skill bar, yet nothing happens. This goes on long enough - 2 to 3 seconds - that the attacking NB can do their Incap Strike (CC - but please read on), and subsequent attack rotation, and kill me.
I have looked at my ult level numerous times, and it's been 250+. I use Immovability potions, so an Incap Strike or Fear will not necessarily CC me. A CC could be part of the problem on some occasions, but my perception is that I can spam Healing Ward much more reliably than try to activate that bleeding ult. To be honest, it is the sheer frustration of hammering the ult key and waiting for a response that gets me killed. This has happened so often now that I am convinced there is something special about the ultimate key. It just does not register as fast or as reliably as other abilities. Does anyone else have this problem?
PC EU (EP): Magicka NB (main), Stamina NB, Stamina DK, Stamina Sorcerer, Magicka Warden, Magicka Templar, Stamina Templar
PC NA (EP): Magicka NB