Hey folks, beyond just tweaking the usual CPM/CPC splits and basic bid adjustments, what extra optimization layers have you guys found that actually deliver steady ROI when you're pushing serious volume through ad funnels? Like, I've been running these pop-style campaigns for a side project lately, started small but scaled up fast, and once the spend hits four figures daily the basic stuff stops cutting it—ROAS starts dipping no matter how tight I make the bids. Feels like there's some hidden sauce in placement-level tweaks or audience layering or maybe creative rotation that keeps things humming consistently without burning cash. Anyone cracked this reliably? Curious what actually moves the needle for you in real high-volume setups.

Totally get where you're coming from—I've had the same frustration when things plateau at scale. In my experience, once you're past the simple bid game, focusing on granular source optimization and frequency capping really starts paying off. Things like building tight whitelists/blacklists based on actual conversion data per publisher or device type, plus layering in rules that auto-pause underperformers early, help protect the ROI way more than just chasing lower CPMs. Creative fatigue hits hard in volume too, so swapping in fresh variations every few days keeps CTR from tanking. Oh, and if you're dealing with pop traffic or similar formats, checking out places like https://www.allydigitalllc.com/ can give you some solid controls for that kind of setup—personally I think their approach to monitoring placements and exclusions feels pretty practical for staying consistent without overcomplicating everything. It's not magic, but combining those with solid postback tracking has saved my campaigns from random dips more than once. What about you, anyone else swear by specific rules or tools?