Thanks! Looking at the message board thread, there is not much improvement of AVX-512 over AVX2. In this case, it probably better just to have a couple more cores running AVX2.
Code:Original-Linux 51,988 Original-Windows 46,707 SSE2 30,681 SSE4.1 28,680 AVX 24,659 AVX2 23,882 AVX512 21,569