Nexon game card not validating
Probably the easiest way to work around this problem to use Steam's own backup and restore functionality to copy the game between computers.
You'll need 65GB of free space on your home computer, and 65GB of space somewhere else.
Edit: After following Ross's guide below, everything worked fine with the backup process!
You'll need 130 GB of space, maybe a bit more, to copy the files in the manner you describe.
Otherwise you can use a folder on your main computer and share it over the network.However, Steam won't recognize the game as installed.I tried to click the "Install" button for the game where it's currently pointed to the folder where I've copied all of this data, but after exiting Steam and opening it again, it's saying that there isn't enough room to install the game.Another thing that is mentioned in the Steam forums, is allowing Steam to verify all of its files and then closing Steam properly (rather than letting Windows kill it as it shuts down).What you'd do here is wait however long it normally takes to verify files and get into the main Steam interface, and then close Steam with the menu option (or system tray icon) before restarting it.
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It's worth noting that this is a well discussed issue with no official solutions available, there are plenty of different suggestions on how this can be fixed though and some of these work for some of the people experiencing the problem some of the time, so you'll want to try all of them if you really want to stop Steam from verifying every time you start it.