Broad vs interest stacks — the tradeoff nobody says out loud

Broad vs interest stacks — the tradeoff nobody says out loud
Interest targeting → tight, predictable, easy to read early. But you cap out, frequency climbs, CPA drifts up week two.
Broad (no targeting, let the pixel cook) → ugly first 48h, needs volume and a clean pixel, then it outscales every interest set you own.
My split: launch interests to feed the pixel fast → once you've got 50+ conversions, open broad and let it run. Broad on a cold pixel just burns cash.
Still stacking 30 interests in 2026? Why.