The Subnautica PS5 file size is considerably smaller than the PS4 version thanks to compression tech used by the console's SSD.

With file compression turned on, Microsoft is able to save 1.5GB of storage for the 32-bit version of Windows 10 and an even more impressive 2.6GB for the 64-bit version.

In either case, a data-compression tool can help you out. We know of three free capable compression tools for your file zipping and unzipping needs.