-XX:+UseNUMAInterleaving has no effect on Windows in this release. It was found that GDI APIs used by java2d don't support the memory reservation scheme used for NUMA interleaving. The JVM detects this problem and both warns about this and turns off NUMA interleaving. See: https://support.microsoft.com/en-us/help/4567569/gdi-apis-may-fail-when-large-pages-or-vad-spanning-is-used