User blog comment:Tedgill/Making Ads Better: How We're Going to Do It/@comment-73.188.246.169-20170130171849/@comment-20644-20170131182158

By and large, ads on mobile are still programmatic. So it's likely that the ones causing performance issue are lower quality programmatic ads, rather than high impact direct ads. But if you are seeing a direct ad that's causing issues, please let us know.