Hey @Dizzzy
Welcome to our community.
Currently, Conan Exiles is running on backwards compatibility mode on next-gen consoles. This means, it makes use of the same assets and settings as those used in PS4 and Xbox One versions of the game, although it benefits from the upgraded hardware the newer consoles offer. Regarding the situation you mention with Series S, we will relay it to the team so they can give it a look and understand what could be the issue that is causing this situation on Series S in BC mode.
There are, as of the time of this writing, no specific plans regarding an upgraded version for next-gen, as our team is currently focusing on bringing The Isle of Siptah to its full release in early 2021. Once that is achieved, we might consider these options based on demand and feasibility.
Hope that cleared it out!