Nothing kills the momentum of a growing metropolis like a save action that gets perpetually stuck. This technical hurdle has been a major pain point for the community, effectively preventing players from securing their progress. The new hotfix is currently being distributed through a test branch named saving_fix to ensure stability before a wider rollout.
To access the fix, you will need to manually opt-in via your Steam library. Right-click on Cities: Skylines II, select Properties, and navigate to the Betas tab. From there, you can select the "saving_fix" version from the dropdown menu. This will trigger a small update that applies the patch code.
Since this is a beta branch, the developers are urging players to report back. If the save action still hangs or if you encounter new stability issues, you should head to the official forums to provide feedback. For a strategy game built on long-term management and complex simulation, ensuring that your data actually writes to the disk is the most critical meta-fix there is.
Soren