Cautious network selection
Network is a key component for a first-class Hyper-V infrastructure. With a bad network design, you can expect poor performance, scalability, and stability. In the project where I was involved, I've often seen network underestimated. The chosen network adapters were the cheapest available and it was unusual that the NIC features were compared with others.
Moreover, it is often the network team which determines the design without consulting the system team. For example, the network team knows LACP perfectly for network high availability and doesn't want to implement a teaming without this technology, but the recommended way of teaming in Windows Server 2016 is using dynamic algorithm.
Because of the underestimated network design, the Hyper-V performances are not always as expected. The network design depends firstly on the storage and compute design that you have chosen. For example, a solution based on iSCSI NAS should require at least two dedicated NICs for storage...