Why does the user login slows down to a halt in Essbase 12c with the following stack trace

javax.servlet.http.HttpServlet.service (HttpServlet.java:791)

…t.internal.StubSecurityHelper$ServletServiceAction.run (StubSecurityHelper.java:286)

…t.internal.StubSecurityHelper$ServletServiceAction.run (StubSecurityHelper.java:260)

…ogic.servlet.internal.StubSecurityHelper.invokeServlet (StubSecurityHelper.java:137)

      weblogic.servlet.internal.ServletStubImpl.execute (ServletStubImpl.java:350)

          weblogic.servlet.internal.TailFilter.doFilter (TailFilter.java:26)

     weblogic.servlet.internal.FilterChainImpl.doFilter (FilterChainImpl.java:78)

…eb.integration.HyperionCSSAuthenticatorFilter.doFilter (HyperionCSSAuthenticatorFilter.java:184)

     weblogic.servlet.internal.FilterChainImpl.doFilter (FilterChainImpl.java:78)

….integration.ApplCoreSessionIntegrationFilter.doFilter (ApplCoreSessionIntegrationFilter.java:365)

     weblogic.servlet.internal.FilterChainImpl.doFilter (FilterChainImpl.java:78)

…security.filter.BISecurityFilter.lambda$chainToNext$12 (BISecurityFilter.java:341)

            java.security.AccessController.doPrivileged (Native Method)

             javax.security.auth.Subject.doAsPrivileged (Subject.java:549)

oracle.bi.security.filter.BISecurityFilter.chainToNext (BISecurityFilter.java:345)