So it works fine in Game Mode now. One thing I've noticed is my saves while in the laptop are iffy. For example, I'll save after having all my conversations and before I do the puzzles, but if I load that save, half to all of those conversations haven't been messaged, yet I'll still have the photos from them. I don't even know if I'm supposed to be able to save while in the laptop, but the start button on the Steam Deck brings it up.
(*BUG*) I also noticed Gigi's bhole pic wouldn't stay in the photo album until I went into the messages with her 2(I think) days later.
Besides these issues, Days 1-17 have been phenomenal. This game makes me laugh so much. I love it. Besides choosing between the sisters, lol. Can't wait for the next update.