Scaling from $100 to $1000/day all at once can trigger performance issues because Meta needs to relearn how to spend that larger budget. This can lead to higher CPAs and unstable delivery. The learning phase isn’t just a 2-day pause—it’s a period where your ad may be shown to less efficient audiences.
Gradual scaling, on the other hand, helps maintain consistency and keeps the algorithm optimized. If you're eager to test higher spend, duplicate the campaign and run it at $1000/day separately—this way you protect your current results while testing scale.