Matlab Compiler DLLs Larger in 2018a vs 2016b

I have a Win 7x64 DLL that was created and used using 2016b, and the DLL comes in at ~50MB fully compiled using that version. The project involves a wrapper script that instantiates a class, incorporates a mex file, and processes some data that's passed in; basic stuff.

After updating to 2018a, and then just re-opening and re-compiling the exact same project, the DLL is now ~250MB, which runs into issues for version control / deployment.

I've tried using the mwArray API / Matlab Data API separately, and this seems to have no effect. What happened to cause such a large discrepancy for deployed code (~5x change) and what options / compiler flags can I set to try and get the size back down to under 100MB?

Compiler is MS VisualStudio 2015, and I've tried MS VS 2013 and it shows the same issue.