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throughput issue dropped packet slow start

Peeps,

I have a 1g link and I am using iperf to test throughput. I am only getting around 20Mbps. If I use 10 parallel streams I can push 100Mbps on the link but still only 20Mbps per stream. I have to work remote so I can only capture on the device. I am guessing because of the dropped (looks like its drop at the receiving nic but i am not sure, nic reports no dropped packet and the interface also reports no dropped packet) the slow start can't reach its full potential.

Thanks for any insite you may have.

https://drive.google.com/open?id=165vJKMPitZK0ahFUwjTWA-GBY3bG_wE4

https://drive.google.com/open?id=1ERS5vXUZXZVpLJTJqr6G8qs0SRZXph8p