Exchange 2016 Error in System Event Logs - TCP/IP has chosen to restrict the congestion window for several connections due to a network condition.

We deployed a batch of DL 380 G9 Exchange 2016/Windows 2012 R2 servers in a few sites.  We're seeing the below error in the System Event Logs.  Anyone familiar with the fix for this? The NICs are teamed.  

TCP/IP has chosen to restrict the congestion window for several connections due to a network condition.  This could be related to a problem in the TCP global or supplemental configuration and will cause  degraded throughput.

Log Name:      System
Source:        Tcpip
Date:          3/16/2018 12:13:40 AM
Event ID:      4230
Task Category: None
Level:         Warning
Keywords:      Classic
User:          N/A
Description:
TCP/IP has chosen to restrict the congestion window for several connections due to a network condition.  This could be related to a problem in the TCP global or supplemental configuration and will cause  degraded throughput.
BYSAsked:
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Pete LongTechnical ConsultantCommented:
This more like windows/Networking than Exchange, have you tried NIC Driver and NIC Firmware?
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BYSAuthor Commented:
I'll check.
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BYSAuthor Commented:
This is a known issue beginning with Exchange 2016 CU2 where new NetTransportFilters are added.  The warning can be safely discarded.
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BYSAuthor Commented:
resolved on own
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