One of your line items has low performance and low delivery. How should you adjust your budget to optimize a campaign for better performance and delivery?

When a line item shows low performance and low delivery, it indicates that the current bidding strategy or frequency settings might be too restrictive or inefficient. Decreasing bids can help the line item win more impressions at a lower cost, potentially increasing delivery and improving performance if the lower bids still reach relevant audiences. Similarly, decreasing frequency caps can allow the ad to be shown to a wider unique audience, increasing delivery without over-exposing the same users. Adding additional supply sources might increase delivery but doesn't address the performance issue, and could even worsen it if the new sources are low quality. Pausing line items would stop delivery entirely, which isn't an optimization strategy for a line item you want to improve.