Thanks but unsuccessful, adding or disabling reflection capture didn’t seem to do anything to the problem, it just brightened things up a bit. I gave Planer reflections a go but it’s far to heavy for my machine, had up to 3,000 shaders to compute.
Not sure if you can see the problem enough so I’ve included another screen-shot started from a blank level. The main problem is a strange black stretching between the sphere and it’s reflection. Also for some reason the top of the sky is black, and detail is really poor.