BuDuS
Guest
I answer myself.when I had the 2009 version on xp/x86_32 I had made a conversion tool - with its visualbasic - dwg (so that it turned me drawings made with cadam, pro/engineer, etc... in autocad mechanical drawings) and now I migrated it on 64bit machines.
the code is the same, yet the processing is much slower; I have not made a comparison to equal design, but the feeling that it is clearly slower to elaborate is there.
I made comparison and there is no comparison; on windows xp 32 bit / autocad mechanical 2009 the processing of the same design takes a few seconds when on the above machine we are in order of 3/4 hour !!!
my impression is that on 64bit machines has problems, in particular the visualbasic module (which, among other things, is no longer understood ... but this since 2010, seems to me).
It's what I didn't report to autodesk, but maybe it's the case.