Background process impact while importing learning item and learning assignment through HDL

Summary:

Content (please ensure you mask any confidential information):

We have already scheduled some process related to learning and also there are few background process running automatically in production.

Evaluate Person IDs for Assignment Rule
Process Learning Recommendations
Process Learning Records
Process User Access
Reconcile Access Groups
Reconcile Dynamic Assignments
Reconcile Learning Catalog Item Activity Changes
Rebuild Learning Item Stop Word Index

Is there any impact to the system or functionality when we do data import parallelly on courses, offerings and specialization and also learning history record.

What is best practice. Appreciate your input in advance.

Version (include the version you are using, if applicable):