I noticed, that SO-bpmn-infra hangs for about 5 minutes.
In the log attached (so-bpmn-infra), we have the following:

2020-05-07T12:22:32.281Z|01bbf662-7054-4838-8e9b-321354b545c7|o.apache.cxf.interceptor.OutgoingChainInterceptor - Interceptors contributed by binding: [org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor@74ae6753]
2020-05-07T12:22:32.283Z||org.apache.cxf.interceptor.LoggingOutInterceptor - Outbound Message
---------------------------
ID: 20
Response-Code: 202
Content-Type: application/json
Headers:

{Content-Type=[application/json], Date=[Thu, 07 May 2020 12:22:32 GMT]}

Payload: {"response":"{\"requestReferences\":{\"requestId\":\"01bbf662-7054-4838-8e9b-321354b545c7\",\"instanceId\":\"51773ab3-db52-4940-af75-bea6cb369484\"}}","message":"Success","processInstanceID":"6c609b22-905d-11ea-98cd-82f3703e2d77","variables":null,"messageCode":200}
--------------------------------------
2020-05-07T12:27:46.716Z|01bbf662-7054-4838-8e9b-321354b545c7|o.o.s.b.c.l.f.FlowManipulatorListenerRunner - Running flow manipulators:
org.onap.so.bpmn.infrastructure.workflow.tasks.listeners.MultiStageSkipListener

Clearly there is a 5 minutes of time, where the SO-BPMN-INFRA is not really doing anything.
We observe this in different environments.

On the API (where You can monitor the progress), You see this as the VF-Module orchestration in IN_PROGRESS, but You cannot see any BBs started, and only after +/- 5 minutes, You start to see the execution of first BBs. All of this before the Request is sent to OpenStack in order to orchestrate a Heat Template (that happens in CreateVFModule BB, whichis executed after these 5 minutes break).

Doesn`t happen for Service or VNF orchestrations. Perhaps matter of SDNC preload assignment? Not really sure looking at the SO logs.

Please have a look at the log attached.