The following VM configuration items should be rechecked after the migration:
- Virtual Network Adapter – consider using VMXNET3 for all VMs hosting enterprise application workload.
- Receive Side Scaling (RSS) and TCP Segmentation Offload (TSO) – consider checking the RSS and TSO settings inside of guest OS and ensure to turn them on. Starting with the version of VMware tools 10.5, RSS is enabled by default on all VMXNET3 adapters, but still might require OS level configurations. Check you guest OS documentation for more details. For more information on TSO check this link and for RSS - the following link.