No, Chrome DevTools network throttling does not allow you to do selective throttling.
If you want to simulate specific services being slow and you have them running on your local machine, I would recommend installing a throttling proxy (e.g. Charles proxy).
If those services are deployed and you still want to simulate sluggish response, I would try amending /etc/hosts
to point to a local charles proxy as well.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…