Character Doing Too Much Damage in Some Dungeons

If your character is not active in Chromie time and/or using party sync with a level-appropriate party member, you will continue to outlevel and outdamage low level dungeons. To scale down to the dungeon level, pick the dungeon's expansion from Chromie for Timewalking leveling, or party sync to a character who is the right level for the dungeon. See this Wowhead guide to leveling after the level squish for more information on what levels zones default to outside of timewalking leveling.