Condor needs a couple of config changes. In the location of the OSG Client install, edit condor/local.*/condor_config.local

First change the security configuration to allow for FS authentication:

SEC_DAEMON_AUTHENTICATION_METHODS = FS, PASSWORD
SEC_NEGOTIATOR_AUTHENTICATION_METHODS = FS, PASSWORD
SEC_CLIENT_AUTHENTICATION_METHODS = FS, PASSWORD 

Then change the scheduling intervals, tweak the GridManager settings, and disable the local virtual machines:

NEGOTIATOR_INTERVAL=25
SCHEDD_INTERVAL = 60
GRIDMANAGER_MAX_SUBMITTED_JOBS_PER_RESOURCE=400
GRIDMANAGER_MAX_PENDING_SUBMITS_PER_RESOURCE=3
NUM_VIRTUAL_MACHINES=0

Once the changes have been made, restart Condor.