Which OS and how have you configured the cards/switch?
How are you testing?
Server 2016 and Windows 10. No config on any of the cards. Just a file share between the 2 machines. Was a 30GB file
Are you sending one thing or multiple? As I understand it, if only one stream it will use one port. If a second stream starts it can use a second one etc.
You need to enable teaming on the card interfaces, you also need a compatible switch.Server 2016 and Windows 10. No config on any of the cards. Just a file share between the 2 machines. Was a 30GB file