


You have to try many different launch option and you have to take a hit in the ingame settings
SteamDeck=1 %command%
a lot was just a bad pixel render and objects were misssing
some PS5 Buttons where not workin in game...
The game was lagging hard in the main menu and at the beginning of loading the game save
At the moment its very laggy and inperformant, not worth its money at the moment.

the game seems good, and perhaps when I am able to test out the full game the issues in the demo running proton are improved.
all graphics other than player would look flat 2d with no actual texture to them. for example tree leaves would be just a flat green texture. even when increasing or decreasing graphic settings.
Game started by default at low graphics, raising the graphics to high did not appear to increase the graphics of any model but the player. checking out youtube vids of play on windows this appears to be a proton thing. moving to ultra-high settings the demo crashed. the graphics where flat textures (very poor quality) even with these decreased graphics the game would stutter. now this is corilated with graphic events.
only crashed when changing graphics settings to ultra-high
as this is just the demo and not the full game the issues present here may not remain in the full game. hopefully if they do the comunity is able to improve them. as they seem to be mostly just graphical issues perhaps a pre-compiled cache of textures like done in apex for the linux comunity would improve things but it is unknown at this time if this would be requried for the full game.