The shadows that you see are a true reflection of the aircraft on itself in relation to the sun position. This function is build into the overall shadow and reflection code and is not able to be removed. You can however reduce your shadow setting to the lowest if you are having performance issues set on the higher settings.
We do not intend on reworking the shadow code at this time.
Thanks for the engagement, but will reducing the qualities of the shadows cause any improvement in this? for example it would improve if it were in accordance with the photo below?