Where do AI agents actually save you time vs. just add complexity?

I've been experimenting with different ways to reduce repetitive operational work, and I'm curious about other people's experiences with AI agents.

Our team still jumps between project tools, email, spreadsheets, and chat just to keep work moving. Even after trying a few automation tools (and recently looking at platforms like WorksBuddy), I keep wondering whether AI agents actually reduce the workload or simply create another layer to monitor.

For those who've used AI agents for things like updating project status, managing follow-ups, summarizing meetings, or syncing information across different tools—has it genuinely saved time?

Where have you seen the biggest impact? And where do AI agents still struggle enough that you'd rather handle the work yourself?

I'm especially interested in real-world experiences rather than feature lists. Has anyone found a workflow where AI feels like a reliable teammate instead of another tool that needs constant supervision?