MagicDash4 does not support the Rennsport racing Sim title so far. Bigger issue is that the Rev lights were not working correctly in either of my main racing Sim titles, ACC or LMU. In LMU they pegged early and in ACC they stopped increasing early. I kept testing the Rev light functionality in various scenarios to define the issue with more detail and eventually the Rev lights started working in both racing Sims without any changes by myself. So now I am happy.
Readable, large enough display, sits lower mounted on the wheelbase than a virtual dash so wheelbase needs to be raised to compensate. Good value, default profiles good. Biggest benefit is that it's modular with the formula wheel, so I can use it with my GT Neo for GT racing and in the Zeus Formula when racing prototypes.