We are experiencing a particularly niche issue where the scrolling performance for one of our table/collection views severely lags, but only for App Store and TestFlight builds. For all local builds and the internal builds we create for our QE team, the scrolling performance is smooth and free of any issues. It's only when the app is distributed through TestFlight or the App Store do we see this issue.
We've gone over the build settings a number of times and have practically ruled out any differences between local builds, builds provided to QE, and builds that are uploaded to the App Store/TestFlight. All builds are effectively identical.
We have tried to reproduce this issue locally, but to no avail. We're not able to take an App Store or TestFlight build and profile or debug it locally, so we're pretty much at a loss in terms of how to proceed and resolve this issue. Is this an issue that's been encountered before? Any advice on how to proceed?