2018.X vs 2019.1 memory ios - same O/S version

We're finding the systemAndDll has grown by 30-40MB in the 2019.1 version of unity vs previous versions.
I've gone through and checked the dlls and no new ones have been included from what i can tell.

The memory has jumped significantly. I am aware of the issues with iOS 12.2 and how memory is now captured in apps more so resultant xcode memory appears higher but this is quite the jump

When we get to gameplay on 2018.X, our memory is around 500MB in xcode for a dev build, in 2019.1 it is over 610MB, iOS 12.2, xcode 10.2.1, nothing else has changed.

The memory profiler in Unity doesn't report any changes in our assets, apart from the systemAndExecutableDll which is about 30-40MB higherb but that still doesnt account for the rest.

Any ideas?

 

did you end up figuring anything out here?