Session Limit and/or limit concurrent user logins

Are there any limitations on simultaneous connections? Is there any configuration I can do to adjust this type of configuration?
I have implemented version 2.3 of the privacy idea in my company and we use it for VPN authentication with Global Protect client.
We identify when there are a number of connections that exceed 100 simultaneous connections, the server remains inoperative and denies new connections. After a few minutes, connections are authorized. I need help to support at least 200 simultaneous connections, is it possible?

Please read this, it might help.