I've tried validating and full re-install (via Steam), and re-setting Window positions in game and selecting different layers for the map view, and just toggling some of the display options, but no change.
My PC is an i7-8700k w/64GB RAM, a RTX2080Ti graphics card, and a Samsung 970 Pro SSD as the OS drive w/ an Optane-accelerated physical HD as a secondary drive. I have 2 x 3480x1600 displays and a 3rd 1080p display. All latest windows and video drivers. No other graphics issues to speak of in any other game or app. DirectX diags shows no problems found.
Anyone see this before? Any thoughts on how to fix?

