VMXNET vs E1000E performance issue

I am getting odd performance between VMXNET and E1000E.
SMB:
VMXNET3: seems to be running at 1Gbps only for download.
E1000E getting 3Gbps.


ISCSI: VM running on it. Test local(C:) speed
E1000E: Write 1.4GB/s, Read 300MB/s
VMXNET3: Write 300MB/s, Read 300MB/s

TrueNAS Core
storage is 4*2TB RI NVMe SSD in z1.
10G connection on all physical layers.