Why does your Cost Per Acquisition (CPA) spike when you scale ad spend? You increase the budget, expect growth, but instead performance tanks, ROAS (Return on Ad Spend) drops and leads get worse.  Here’s the truth:   Paid media doesn’t scale with spend; it scales with signals. Strong signals train the algorithm, and weak ones waste your budget. At DC Lab , we call this the “Spend Spiral”, where budgets rise, performance stalls, and no one knows why.   If your paid performanc