A full season on FM24 takes 40-60 hours. A full season on CM 01/02 with 3.9.68 takes 6-8 hours. You can simulate 30 years while watching a movie.
If you are installing the patch on Windows 10 or Windows 11, simply double-clicking the .exe file usually results in an or the installer closing immediately. You must bypass the installer logic. cm 01 02 patch 3.9.68