I think it depens, it's not lineal, each workflow has a different weight in the total load it creates depending on:
But, for a rule-of-thumb you can use atlassian sizing guide:
From my point of view, having a large number of workflows creates problems with the administration first.
A workflow only really imposes load when it is being used, not just because it's in the system. There are far more important things, like complex and multiple permission schemes, active users, number of issues, complexity of fields on issues and so-on.
I completely agree with Gaston - your admins will be overwhelmed by too many workflows to look after before you'll be able to say "too many are causing a load"
Badges are a great way to show off community activity, whether you’re a newbie or a Champion.Learn more
Hi Atlassian Community! My name is Shana, and I’m on the Jira Software team. One of the many reasons this Community exists is to connect you to others on similar product journeys or with comparabl...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs