Having an issue with multiple dtTiles per mmtile...
White lines indicate tile connection.
Heavy blue lines indicate a tile edge that is unconnected.
2x2
4x4
8x8
16x16
32x32
64x64
In 2x2, 8x8, 32x32, all of the tiles are unconnected. I think it's a float precision problem, but it's hard to tell since higher tile counts work normally.
This leaves us with 4x4 or 16x16, unless I manage to correct the problem (64x64 was just for giggles ).
Haven't done the math (too lazy) but I don't think it 16x16 is too much for 64bit refs. However, it does create some stupid detours (that visibility optimization trick would fix it)
edit: also noticed that with smaller dtTiles, there are extra sections of navmesh on those mountains.
edit2: changes here