Switch alerting "clients overloading"

Hello everyone,

this is the first time I see this alert:

What is its meaning?

Maybe too much clients connected? No more switching bandwith?

I only find something similar regarding APs:

https://community.zyxel.com/en/discussion/14939/what-is-the-meaning-of-the-ap-status-with-an-orange-icon-and-client-overloading-description