Condensation dripping from vents may mean high humidity, cold supply air, or poor insulation

https://actroubleshooting791.quantlynix.com/posts/common-reasons-for-frozen-ac-coils-and-how-to-prevent-them

Condensation dripping from vents may mean high humidity, cold supply air, or poor insulation. Wipe up moisture, improve airflow, and have ducts checked if needed.