Wizard has issues in BG3, but not to being underpowered itself. Game mechanics make the class more frustrating to play than it should be.
- Encounter AI usually focuses on wizards over other classes, even when it is illogical to do so. You can abuse this and control enemy movement in encounters.
- Dim light disadvantage: Melee gets to counter this with backstab, with a wizard I hope you brought dark vision.
- Verticality disadvantage/advantage: forces you to move a wizard into sub-optimal positions. The enemy wants the high ground and your wizard does too, so the game asks you to move the wizard next to the enemy.
If these three points are addressed wizard is fine. Note, none of these had any changes to the wizard class itself.
