NSX appliances should be configured with the required amount of CPU and Memory. The insufficient resource allocation and reservation may lead to issues. There is a known issue where CPU or memory reservation of NSX appliances are different than specified in OVA.
VMware NSX-T 3.1.x
VMware NSX-T 4.x
There is a known issue where CPU and/or memory reservations of NSX Managers differ from that specified in the OVA. More information about the known issue, read the KB CPU or Memory reservation are different from that specified in OVA when NSX-T Manager Unified Appliance is deployed through vSphere Web Client
While troubleshooting NSX issues, it may need to retrieve NSX manager appliance CPU and/or Memory reservation settings from vSphere environment.
The unavailability of vCenter/ESXi access for NSX administration could make it challenging to confirm these CPU and memory reservation settings.
These commands requires 'root' login to NSX manager appliance
#vmware-toolbox-cmd stat cpures
#vmware-toolbox-cmd stat memres
These commands should run on all manager nodes in the cluster.