


Text is small in menus and in-game documents.
The game runs well out of the box. Medium settings will net you around 40fps while low settings will have you reach 60fps. The city of Rattay can be a bit of a bottleneck regardless of your settings so expect a few drops here but they're not a problem gameplay wise.
The main issue with the game is that it eats the GPU out, which means the fans are almost always blasting and the Steam Deck heating. I personally set the game to medium (while raising the draw distance a bit) with 2x antialiasing then capped it at 30fps. I then reduced the TDP to 12 and the GPU speed to 1200mhz. Performance is solid like this and the game looks great while the Steam Deck remains silent (except, oddly enough, when in the menus). However, it can induce rare crashes during larger story battles with lots of NPCs (such as the one in the bandit encampment midway through the game). Those are uncommon and the game saves before them, so if you encounter any, just remove the TDP and GPU caps while they last. I assume setting the game to low with the same caps could easily give you 40fps as well. Depends if you want your console to be silent and have decent battery life or not. Texts are also a bit small on the screen.
Overall a good experience with some tweaks depending on your preferences, but the game runs well otherwise, aside from its known graphical or quest bugs that have been here in every version since release. It's a rough gem that I highly recommence, especially if you plan on trying the second one which apparently irons out a lot of the first's technical issues, GPU usage included.

GOG version of Game runs well on Deck, but would not initially start. Had to change launch options.
PROTON_USE_WINED3D=1
Books text is small, used zoom to read
Run GOG version through Heroic, and it gave an unsupported GPU error. Had to add the start option listed to get the game to run. Game runs pretty well beyond that.

Capped FPS to 45
In the prolouge, the dialog does not mix well with the rain. The audio produced by the dialog and rain seems to be "taking turns" to use the speakers.
Not sure if Proton or SteamDeck problem: The load game screen is slow to load. Maybe I have too much savefiles?

I play on low, and that's more than enough. Most of the time I'm at 60 FPS. The only places where I hit 45 FPS (and it usually climbs up to average near 55 FPS, and even my main PC sometimes has 55 FPS lag spikes but on high) are in cities like Rattay. Most of the other towns and the wilderness hit 60 FPS consistently. Would highly recommend on the Steam Deck.

The game plays like a dream at 40-45fps and all controls work out of the box. Just adjust the graphics settings to your preference
Not that big a deal, but some text was small during tutorial messages. Just use the magnification feature STEAM+L1
A really good experience on the deck.

The size of the in-game books were fine, but the font for the UI in general is dense. Not too bothersome though
Crackling when going to sleep then waking up---can only be fixed for exiting the game then restarting, BUT this happens on a couple of other games as well
This game is notoriously buggy, even years after release, but I've only encountered a few where my character would get stuck on foliage. One mission-breaking bug where you're supposed to drop three bird traps or some odd item like that, but when dropping the item, they disapper completely, and the quest remains incomplete. Many users on Reddit also have this issue as well

A book used during "Needle in a Haystack" is hard to read
Fixed by exiting the game and booting it up again or taking out headphones and plugging them in again. Seems to only happen while resuming from sleep. Unsure if this happens with speakers.
Capped at 40 fps
Locked 40

I mapped the magnifier to a R4.
Menu text is sometimes too small, but magnifier can be used to compensate.
Text is a bit small
On my steam deck it crashes every 15 minutes, which I consider to be unplayable. I have tried the default proton, experimental and GE-38.
Crash (DXGI_ERROR_DEVICE_RESET) every 15 minutes
works flawlessly at 40 FPS, sometimes there are some minor FPS drops in the 25-30FPS zone but gets back to normal rapidly
locked to 40Hz and 40FPS
drains battery a lot, even locking FPS you get about 1/1.5 hour of gameplay and no more, I generally play plugged

FPS lock to 40.
Works suprisly well on native resolution with high settings + hd texture pack. Frame rate was about 40-50 fps, so I locked it to 40 fps to get smooth expirience.
Works out of the box with GE-Proton. For max graphics with 60+ fps change resolution to 960x600 and enable FSR.
changed resolution of the game to 960x600 and enable FSR (scaling filter)