The devs confirmed HDR was broken in the demo and will be fixed in the final version (demo is from tgs build that was calibrated for show monitors), along with full button remapping option, increase text size, less menu warp effect. Demo was its own separate build with unique fetch quest set up and all story stripped, probably rushed it out and didn't have time for optimization. How many devs even gives us demos of their AAA games nowadays, this one was fairly large xD. Final optimizations will be interesting to see on release build, if they can stabilize the res should look a lot better.