Intel Server NIC I350 LACP IEEE802.3ad teaming issue

Hello Community
I face an issue which i cannot resolve.
I have:
Intel Server System R1208GL4DS with buildin I350 4 ports inet adapter
OS: Windows Server 2008 R2
NIC drivers ver 18.4 (PRO set with ANS)
Data Center provides ieee802.3ad dynamic aggregation teaming connection, It uses 2 ports on my server (0 and 3)
DC uses Cisco Nexus switches
SpanningTreeProtocol is ON and cannot be switched off by DC.
Problem:
One of the adapters suddenly goes on standby state and doesnot pass traffic.
As the result the whole connectivity to server and to services I use stuck at that moment.
There is only one way to resolve is to restart server or restart whole team by changing the team properties.
Nic properties:
flow control off
ofloads off
rss off
Team:
I have tried to change everything playing with any property within nic or team. No luck.
Some information from DC support of the swith config:
# sh interface po1113 switchport
Name: port-channel11
13
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: trunk
  Access Mode VLAN: 1 (default)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Allowed: 300,390,398-399
  Voice VLAN: none
  Extended Trust State : not trusted [COS = 0]
  Administrative private-vlan primary host-association: none
  Administrative private-vlan secondary host-association: none
  Administrative private-vlan primary mapping: none
  Administrative private-vlan secondary mapping: none
  Administrative private-vlan trunk native VLAN: 1
  Administrative private-vlan trunk encapsulation: dot1q
  Administrative private-vlan trunk normal VLANs: none
  Administrative private-vlan trunk private VLANs: none
  Operational private-vlan: none
  Unknown unicast blocked: disabled
  Unknown multicast blocked: disabled
Please advise as I'm almost stuck.
Thank you.

May be problem on Cisco side, Cisco is very clever, could assessed network traffic as a problem and close the port. When OS is running, then NIC Teaming working fine, but when you boot up server, "BIOS not running with NIC Teaming", in this moment
may occur problem on Cisco side.
I recommend, if you use Cisco, configure NIC Teaming in LACP mode and configure your two ports on Cisco to LACP, it's better way.
Regards,
thennet
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