Are you able to easily exert dream-powers in dreamscapes which represent your waking life?
I think there's a relation between this difficult to exert certain dream-powers in dreamscapes which seem to be too real because of they are representing some places from my waking life, specially when I become lucid during a FA.
For me, after stabilizing the dream, before I try to use any power without loosing control, I must first, break the chains which are telling me that's my real world. The easy way I found is by start flying after a long jump.