The quality of the group will affect how easy it is.

For example, when I play as SCH in the expert dungeons:
  • In groups with good dps and with tanks who manage their mitigation on pulls, I never have to touch a gcd heal.
  • In groups where the dps is so slow that the trash is lasting forever or with tanks who don't mitigate because they're "saving it for the boss," I can feel the high blood pressure as I spam adlo and scream at aetherflow to come back off CD.