Running KDE Neon 6.3.5, Nvidia 570.144 proprietary drivers, an RTX 4070S.

I’m not too sure just when this started, but I no longer have the option to enable Nvidia Frame Gen, I only have the option for AMD FSR3 Frame Generation - Which honestly isn’t as good.

I think the issue may have presented itself when SteamDeck=1 %command% became a hard pre requisite to run the game?

Is anyone else seeing the same behavior, or is it just me?

Steam launch options below:

gamemoderun mangohud LD_PRELOAD="" SteamDeck=1 %command% -PSOCompileMode=1