Although The Lord of the Rings: Gollum is releasing with no verification status later today, it is playable, but not with the settings it comes with. Thanks to Renaissance PR for providing us with a game key to try this out on the Steam Deck.
Not only do the settings in the game need tweaking but you will also need to change the UMA buffer setting on the Steam deck to prevent issues with cut scenes, which you can do via the guide here you can also see our best settings for Gollum here