Slow 10Gb network on esxi7

[maurotb]

Hi,
i migrate from pfsense to opnsense ,
in test a simple configuration,
two nic 10Gb , vmxnet3 driver ,
two vcpu (on amd 64core 2,5ghz)
2gb ram
only nat enabled,

with iperf i reach 3,5gbit on pfsense and 2,5gbit on opnsense.
with top ,i see a lower interrupt in pfsense (40% free) respect to opnsense (10% free).
i can modify something to speed up my fw?
I have test to enable and disable various offload in gui with no result.
Thanks