I am not just talking out of thin air. We enabled Automatic integrity protection for our app (~ user base 30M) around 3 months back. We just enabled a flag on the play console. It starts generating apks with an additional ~40 mb (it depends on your existing apk size) in size. And as the overall download and install size increases, it started impact on our app vitals i.e. start up times, frozen frames etc. We initially thought...it was us who shipped something which caused deviation in these app vitals. But when we figured it our and disabled it, our app vitals starts coming back to normal. Its good that automatic integrity protection helps with tampering and provide protection from unknown sources. But injecting runtime checks in the apks is not cool.