I’m gonna get downvoted to oblivion for this…
I just got my new OLED and weirdly enough, upon booting it I saw something that I didn’t even think of till now. With the new OLED, the sub-pixel arrangement is slightly different than the LCD, and it’s causing white edge (specially on text) to have this green/magenta fringing. It’s extremely faint, and it’s not particular to the Steam Deck since I know of other OLED panels that have the same fringing. However I have heard zero mention of this and I have to say that although this matters close to nothing while playing videogames, it’s something I do see with subtitles.
With this out of the way, the screen looks amazing and I’m more than ready to sell and replace my LCD deck now. I hope the technology gets there where this isn’t an issue anymore!
Valve can control settings for text anti-aliasing in Steam, Steam’s Game Mode UI, and in the KDE that it shows with SteamOS, but subtitles and other text in games typically aren’t drawn by the OS but directly by the game’s own renderer. I don’t know if it would be possible for something like Gamescope to apply some sort of “filter” to games to mitigate poor text rendering in games; such filter would have to apply to the whole screen and might cause strange artifacts elsewhere.