Performance: WeldDeployment.getBeanDeploymentArchive method is synchronized

(Wildfly 10.0.0.FINAL)
During the performance test of my app (50 concurrent users with jmeter) I am running into the following issue:
There are locked threads in the method WeldDeployment.getBeanDeploymentArchive(). Looking the code, this method is synchronized, so it makes sense. The question is, is this the expected behavior or this is a bug. In both cases is there any workaround to overcome this limitation?

STACK TRACE:
....
org.jboss.as.weld.WeldProvider$CdiImpl.getBeanManager():73
org.jboss.as.weld.WeldProvider$CdiImpl.getBeanManager():93
org.jboss.as.weld.deployment.WeldDeployment.getBeanDeploymentArchive():226