I just wanted to say I'm almost exactly the same way, and it's kinda cool to see someone else stuck in this halfway point, lol. The way I describe it is that I can picture the concept of something in my head, but the moment I try to focus on any details, it gets warped or corrupted or simply won't manifest any more detail. Same on struggling with faces/remembering people, not so much on spatial orientation.

While I haven't played chess in a long while, I can kinda draw off my experience with similar games and logic problems I've worked on. I can kinda hold the concepts in my head, but not really visualize it. So I'll not be envisioning the chess board, but I can still easily puzzle out "if I take this pawn, that one will take my rook, then I can take it with my knight", etc.