Description of problem:
CFME V2V automation scheduler behaviour of queuing up to 10 migrations per host seems flawed on a multi-host environment. As an example: if you run migration of 10 x 1TB VMs (that would take long time to complete), and you have a total of 3 migration hosts, only 1 host will be utilized. 

Maximum queue size should be calculated relatively to the number of hosts and/or defined by the administrator per host. Note that each host might have V2V capabilities, in terms of hardware and current utilization.

Version-Release number of selected component (if applicable):
CFME 5.9.3.4
VMware vSphere 6.5
RHV 4.2.5.1