A high CPC with a low CTR indicates inefficiency in your ad campaign. High CPC means you are paying a lot for each click, which can strain your budget. Low CTR shows that few users are engaging with your ads, suggesting they may not be relevant or appealing to your target audience. This combination often points to a need for optimization. You might need to refine your targeting, improve ad creatives, or adjust your bidding strategy. Addressing these issues can help lower CPC and increase CTR, leading to more effective campaigns.