During April 2026, work focused on enhancing the ESSS/alfasim-sdk repository by implementing a slug flow dampening control for transient simulations. This feature introduced a new damp_slug_flow option within the NumericalOptionsDescription, allowing users to manage and reduce the impact of slug flow during transient runs. Developed using Python and leveraging simulation modeling expertise, the solution addressed previously unstable BR25 transient results, thereby improving the reliability of simulation outcomes. The engineering approach centered on extending existing software development patterns to integrate the new control seamlessly, resulting in a more robust simulation environment without introducing any new bugs during the period.