Information

• Qiskit Terra version: after 300e950
• Python version: 3.6
• Operating system: Linux

What is the current behavior?

After #5358 merged a significant import time performance was introduced:

https://qiskit.github.io/qiskit/#import.QiskitImport.time_qiskit_import?commits=300e9507

Steps to reproduce the problem

Run import qiskit