I believe others saying in this topic you can see other aircraft lights (MP) are right, but they might not share the same definition of “vicinity”.
I don’t believe I have a solve for your question, but related to it, here is a topic about this you might want to check out to see if you agree with:
Increase distance threshold to see other aircraft navigation and strobe lights at night
NB: although listed in the VR section it is equally problematic in 3D.