Here's something most paid media teams only learn after it's already cost them: your best-performing ad is often the one quietly eroding your budget. Not because it stopped working, but because it worked brilliantly, for too long, on the same people. That's creative fatigue. And it's one of the most consistent, most underestimated drains on paid media ROI there is. When performance dips, the instinct is to blame the algorithm, rising CPMs, or a saturated audience. Often, the