I'm not seeing any speed increase when using an ENA vs non-ENA ami as seen by iperf. ami-80861296 vs ami-2757f631; tested transfer between pairs of m4.large and

I'm not seeing any speed increase when using an ENA vs non-ENA ami as seen by iperf. ami-80861296 vs ami-2757f631; tested transfer between pairs of m4.large and m4.xl VM-s.