picture please. i’m pretty sure i know what you mean. even entirely raytraced, reflective floors and even chrome balls have a bad blend of screenspace reflection residual. unfortunately you can’t disable those screenspace “artefacts” entirely. or i haven’t found the switch yet.
if you mean general screenspace reflection. it’s just how it works. outside of the screen there is nohing you can reflect so you get those edges. or the developer would have to do some border clamp math for the screenspace texture to not sample the emptyness.