Hm, example queries that failed you? Also, did you do DR from OpenAI, or others? (OpenAI's is a different league, and people sometimes confuse that with Perplexity's or Google's).
For me, the main place where it fails is specific links to the stores and specific prices / opportunities. But when I want to find an item that fits a need (e.g. "quietest mobile AC" or "best ultra short throw projector for my specific use case", "collagen supplement that has clinical confirmation of the quality...") it works way better than Google. And I tried many product categories.