In several places in Calculator, we disable optimizations to work around bugs in the compiler related to coroutines. Some of these workarounds might no longer be needed (since some bugs have been fixed) while others might be hiding still-unresolved issues that need to be fixed in the compiler.

For every instance where we've disabled optimizations (starting with the one which seems to be new in VS2019) we should produce a minimal repro case which we can send to the C++ team.