Traffic slow down when LACP is used?

Hi. I have configured a HP 5900af with an IP and nothing else after factory reset.

I have a server and two clients that attach for testing, not Virtual. The NIC in the server in question is an intel i350 t4 teamed. This serves a VHD and a game disk to the two clients.

When i only connect a single cable to the switch from the server they load about as fast as i can ever see them being. Approx 1:40 to fully loaded with game access. But if i connect another cable or all four cables from the server to the switch, they take 8 minutes to load. The switch slows to a crawl.

There is something i am not doing correctly or not understanding in LACP. Anyone have an idea where i should look on fixing this? I dont want to have this same issue when the 10g NIC dual gets here.

Thanks