Short of making tasks with closer deadlines run sooner, there isn't a setting for making certain tasks or projects run faster.

The solution I would recommend for you is to keep your cache as small as possible. If you've set it to only one CEP2 task, than it will only download one at a time and will not get more until that one has been reported as complete. The smaller cache will assure those units get done sooner so you can download another.

You should increase the number of CEP2 tasks you run at any one time. Most systems are capable of running at least 2. The setting is for the maximum you will run at any given time, so you could be running less, but never more.
The only thing you can do is suspend the other tasks to force the CEP2 task to run, but you will not pick up any new tasks when WCG tasks are suspended, so you would need to remember to enable them again.