cnxPerServ x > 5

What does it mean? What do I do about it?

This refers to connections per "remote server" (connection pooling).

For small systems, 5 is the suggested starting value.  Larger systems may wish to balance very large numbers of remote servers vs the number of connections per server.

For a deep dive on setting all remote connection related client startup parameters, see this Progress KBase article on How to set the values for ...