Symptoms:
This issue is resolved in NSX-T Data Center 3.1 available at Support Documents and Downloads (broadcom.com).
Workaround:
To allow the large size vMotions to complete, you can extend the resync timer, see details below.
1. Login as root on the ESXi host.
2. Make a backup of the file /etc/vmware/nsx-opsagent/nsxa.json
3. Use vi and edit the file as below:
4. Save and quit the file:
5. Restart opsagent using the command below on ESXi host :
6. Repeat the above steps for all impacted hosts.