In a weird coincidence, Valve put out a Proton Experimental update the same day that I decided to download Call of Duty: Black Ops 3 to my Steam Deck. The changelog for this update is pretty small so I’ll go ahead and get that out of the way:
Fix graphical issues in Call of Duty: Black Ops III while playing videos Fix PooShooter: Toilet Invaders starting to a black screen.
No, I didn't add that last one as a goof. Someone at Valve woke up one day and said, “You what game really needs fixing? That poop game.” You have served your community well, unnamed Valve developer.
The more notable change was the fix for Call of Duty: Black Ops III to fix the issue with videos. Looking at the game’s ProtonDB page the media playback issues were one of the few issues the game had, the only other being stuttering issues online. Why I downloaded the game to my Deck the other day was not because of the Proton update however. Other people may be aware but I only found out yesterday how to reduce the insane install size if you bought the Zombie Chronicles Deluxe Edition.
If you go to the game’s properties and under DLC you’ll notice all the DLC is selected. Now I assume this is the case with most games, however the DLC is quite large. What you’ll also see is you can toggle the single player campaign, the multiplayer, and Zombies as downloadable components. I disabled the campaign and multiplayer along with some other DLC to reduce my install size from 150GB (yikes) to 60GB (less yikes). This is still a lot for just Zombies, but this mode was a staple of my high school and early college days. The game also has split screen co-op so I truly can relive the old days with a buddy.