Quote Originally Posted by IOwn92FCHouses View Post
As someone who literally just said this, skill issue. Expert dungeon mobs don't do enough damage to outdo a general rotation of oGCDs and CDs, and bosses don't output enough damage to threaten the tank. You have more than enough resources to handle people standing in bad, especially with how overloaded healer kits are now.

As said, needing to GCD heal an expert is a skill issue.
A skill issue you may have no control over, such as the quality of your tank. And DPS I suppose, if they are very slow and don't burst things down quickly.