PD have said there will be no official optimization for the steam deck . I have a steam deck and find it fantastic and it runs KSP1 and Juno no problem which more than makes up for not being able to run the mess that is currently KSP2. See https://support.privatedivision.com/hc/en-us/articles/10601547732755--Kerbal-Space-Program-2-Will-the-game-be-optimized-for-Steam-Deck-