Network performance parameter expectation while launching instances

What kind of network performance parameters should I expect at the time of launching instances in cluster placement group?

The network performance differs between the instance type and network performance specification, in a placement group the user can expect till

10 Gbps in a single-flow.
20 Gbps in multi-flow for an instance full duplex.
Network traffic excluding the selected group will limit to 5 Gbps(full duplex).