We have posted a TECHNICAL UPDATE for the demo, in a beta branch. To try it, you go to the Properties for the game, go to Game Versions & Betas, and pick public-testing (no password).
Included in this version:
Optimizations for faster frame rate, especially on lower-end devices! (60fps on most levels on Steam Deck)
A new, lower-profile graphics setting "Very Performance" that can be used on these platforms to achieve these frame rates (or better battery life).
Increased compatibility with older GPUs and systems with less RAM. (Still no shader model 6.5 support, but we are looking at this).
Separate volume controls for music, sound effects and character voice
Control vsync, frame rate cap, and antialiasing mode from the Graphics submenu.
Switch the text language dynamically from the menu without having to fiddle with Steam settings ..
... And more!
Thank you for playing and enjoying the demo.