In V Rising, you can customize your server with your own settings to adjust the way that you and your players play. If you prefer to have a longer lasting game, it may be best that you disable or modify the castle decay rate. You can modify this using these steps.
1. Open the File Manager
2. Navigate to /settings/
3. Right click ServerGameSettings.json
and click Edit
4. From here you can modify the castle decay settings. Note that higher numbers make castles decay faster. Setting it to 0 will disable castle decay.
5. Save the file and Restart the server.