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So before you launch the game, the files will automatically be downloaded as soon as you enter your Steam credentials. In that case, the Cloud API or the disk will automatically resume the game progress. In case you are looking forward to changing your computer, this procedure is pretty much useful for you.
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The Cloud API generally helps during the performance. After exiting the game, the auto cloud configuration files will be replicated automatically to the steam cloud servers. Steam cloud basically stores your game data easily and transparently on a remote storage system.
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