Description of problem:
When running rfc2544 throughput tests using bidirectional forwarding from testpmd with E810-XXVDA4T NICs, results are inconsistent. Sometimes around 80% and sometimes 100%

Steps to Reproduce:
1. Configure testpmd using sriov to do bidirectional forwarding
2. Run rfc2544 throughput tests

Actual results:
Inconsistent throughput rate when running rfc2544 tests

Expected results:
Cconsistent throughput rate when running rfc2544 tests

Additional info:
hardware Capabilities: [e0] Vital Product Data
Product Name: Intel(R) Ethernet Network Adapter E810-XXVDA4T\x00\x00
Read-only fields:
[V1] Vendor specific: Intel(R) Ethernet Network Adapter E810-XXVDA4T
[PN] Part number: M56954-005
[SN] Serial number: 507C6F1FB4E8
[V2] Vendor specific: 2422
[RV] Reserved: checksum good, 1 byte(s) reserved

sh-4.4# ethtool -i ens2f0
driver: ice
version: 4.18.0-372.49.1.rt7.206.el8_6.x
firmware-version: 4.20 0x8001778b 1.3346.0
expansion-rom-version:
bus-info: 0000:17:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes