Ola Paul!
I full understand, that's my doubt, why a 32 cores machine is slower than a 16 cores, maybe you are right, the 32 cores machines are old, Its why I asked to you test in 32 bits mode, so, it will Push Camera in the faster speed as possible and we can see if the Amazon Pc machine is old, or we find a related bug with a particular hardware machine from Amazon.
Just did a test, EIAS 9.1 Windows 8 64 bits (New Mac Pro 2013) - 12 cores
32 bits 8 threads - 3min 33secs
32 bits 16 threads - 2min 32secs
32 bits 24 threads - 2min 14secs
64 bits 8 threads - 3min 20secs
64 bits 16 threads - 2min 23secs
64 bits 24 threads - 2min 18secs
Thanks
Tom