thanks for your ideas Finally we have reached the same conclusion.

Between 12 a.m. At 15 a.m., my business services can receive about 20 requests per second with an average size of 120KB per message. The problem is not that my business services can not get that volume, the problem is that my business process (which applies a great transformation) is my bottleneck. I have registered cases in which we have reached 9500 queues in the BP and delays of several hours.

the communication between Business Service and my Business Processes is asynchronous. All the logic is in the Business Processes because, thus, the response to the origin is faster and independent of processing.