Performance capacity issues with Foreman 1.7, Openstack, Puppet

We have an environment that has the following:

Foreman 1.7.5
Puppet 3.7.3
Openstack Icehouse

This environment has been running fine all year, but in the past couple of
weeks, we tend to hit a capacity limit. When I submit a new build from
Jenkins and at the same time create a new VM through the Foreman web
interface, Foreman goes "out to lunch" and is not responsive. The server
is not being taxed at all and the load is minimal. Is there some kind of
tuneable or anything I can check for capacity?