I did some performance test using Weld Interceptors.
I compared beans injected @Inject and @EJB. Beans had the same logic.
Here are my results

METHOD_INVOKED_COUNT=100000
This took time: 48872ms [@EJB Class EJB-Interceptor]
This took time: 49133ms [@EJB Method EJB Interceptor]
This took time: 48939ms [@EJB Class Method-Interceptor]
This took time: 49115ms [@EJB Method Weld-Interceptor]
This took time: 48812ms [@EJB No Interceptor]
This took time: 4619ms [@Inject No Interceptor]
This took time: 201270ms [@Inject Class Weld-Interceptor]
This took time: 203329ms [@Inject Method Weld-Interceptor]
This took time: 34ms [POJO]

As you can see @Inject + Interceptor have poor performance.

EJB Bean -> @Stateless
Weld Bean ->@SessionScoped (2 instances was created)

If you need source code for this test please inform me