Coverity analysis defect 115809: Uninitialized scalar field

Uninitialized scalar field

The field will contain an arbitrary value left over from earlier computations. A scalar field is not initialized by the constructor437: UNINIT_CTOR 115809 Class member declaration for "_lastBatchElapsedMS".
207: UNINIT_CTOR 115809 Non-static class member "_lastBatchElapsedMS" is not initialized in this constructor nor in any functions that it calls.