Re: Question regarding how many Controller licenses needed
Couple of facts before answering your questions:
1. Only a single test can be run on a Controller at a single time. To run x tests, you will need x Controller machines.
2. The PC server license control the number of concurrent runs that are allowed to run across ALL projects at a single time. Even if you have more Controller configured in your installation, you will not be able to exceed the number of concurrent runs mentioned in your PC licenses (Lab management > Licenses)
Regarding your questions, to achieve two performance run at the same time, you will need:
* A PC license containing at least two concurrent runs, and
* Two PC hosts configured as Controller available at the required time.