Many of these games are built on the Ren'Py or Unity engines. The fix may include an update to the engine to allow the game to run smoother on newer versions of Windows, macOS, or Android.
If the game includes "stat-grinding" or relationship points, the fix might adjust the difficulty to ensure players can actually reach the new scenes added in the v03 update. How to Install the Fix plus size family taboo v03 by chaixasgames fix
Are you having a specific like a "black screen" or a "traceback error" while trying to run this specific version? Many of these games are built on the Ren'Py or Unity engines
For games by ChaixasGames, the installation process usually follows these steps: plus size family taboo v03 by chaixasgames fix