

They did say the word driver, yes.
That is in no way evidence that their current problem is a problem with their gpu driver.
Inside the word install is the implication that they installed and configured lot of things in addition to the driver. Considering that the game launches but fails to play some multimedia file it’s incredibly unlikely to be a low level problem like an incorrect driver. This is typically a missing proprietary codec or library inside of the wine environment.
My NAS is a steam library, some games will even run off of it perfectly fine. It’s mostly to free up space on my SSDs with games that I’m not actively playing.