Screen Space Reflection is an effect which is enabled by default that alters the appearance of objects on the surface of Materials. There are only a handful of options that can be tweaked for this effect which are outlined below.
Enable/Fade/Disable the Screen Space Reflection feature by percentage (avoid numbers between 0 and 1 for consistency).
0=Lowest Quality while 100=Maximum Quality (50 is the default to provide better performance).
Used to determine what roughness we fade the Screen Space Reflections (0.8 works well, smaller can run faster).