I think I found an important clue about the reason of this ATI bug
:
In my system it seems to be related to the presence on the 3d map of the big (French only ? - not sure) f
lags over occupied villages or towns. Tonight I had this bug in a Friedland test battle: one of my inf units, although her corps had deploy orders to a line far ahead, had decided to station in the village to the south of the center of the Friedland map, and indeed, there was a giant French flag over that village. Further testing showed that indeed it is those flags that aparently cause the bugs - I manually ordered this regiment out of the village - no flag, no graphic bug in any part of the map. I then ordered it to renter the village - flag over the village, again the graphic bug, and so on.
So:
THE ATI 3D MAP GRAPHIC BUG IS PROBABLY CAUSED BY THE TEXTURES OF THE BIG FLAGS OVER OCCUPIED TOWNS/VILLAGES !
if we can somehow get rid of those flags, make them smaller, or change their texture size, I think that's a bug that's going to be squished !!
Best regards
(reported on redmine)
(EDIT: Just tested this idea on Haslach, and bingo: French flag over Haslach = graphic bug. No French flag over Haslach = NO BUG ! I
think - not 100% sure yet - that it is indeed the FRENCH flags, and not other nations, that cause this problem)