Any normal map can not be rendered correctly using 64-bit-version mitsuba on window 10
Optimized build (64 bit, Vista+)
download from http://www.mitsuba-renderer.org/releases/current/windows
No matter what the object is, the result are all not correct.
I render it on different platform(like win10 on i5-3210m, win10 on i7-7700, win10 on i5-3470), results of them are also not correct.
I haven't try it on other windows system like win7, vist, etc.
Elder version of mitsuba (self-build from the source) does have this bug.