If you do not have more than 1 VM utilizing high bandwidth disable NIOC for the shares to be fully maximized on the DVS
Or
Increase the global queue setting on the host. The advanced option that you want to change is NetSchedHClkLeafQueueDepthPktMAX. The default value is 5120 and the recommended setting is to increase it to 10000 on all hosts that might run an NSX edge.
vsish -e set /config/Net/intOpts/NetSchedHClkLeafQueueDepthPktMAX 10000
vsish -e get /config/Net/intOpts/NetSchedHClkLeafQueueDepthPktMAX
Vmkernel Config Option {
Default value:5120
Min value:1
Max value:20480
Current value:5120
hidden config option:1
Description:Maximum number of packets each HClk leaf node can hold
vsish -e get /config/Net/intOpts/NetSchedHClkLeafQueueDepthPktMAX
Vmkernel Config Option {
Default value:5120
Min value:1
Max value:20480
Current value:10000
hidden config option:1
Description:Maximum number of packets each HClk leaf node can hold
Host specific config option:0
Option update requires reboot:0
Option update requires maintenance mode:0