This is what I would say. Since you are getting better results in max, bake it in max. OR you can bake out a object space map in max, then convert it to a tangent in Nspace, and have it be fine. Or just bake the tangent in max, then when perna releases the max fix soon, you can fix it then.
No version of Max supports DX11. Though it looks like they will support it in the future. http://area.autodesk.com/forum/autodesk-3ds-max/autodesk-3ds-max--3ds-max-design-2011/when-autodesk-will-catch-up-with-the-world--will-they-ever-/