diff --git a/whitebox_neutron_tempest_plugin/tests/scenario/test_multicast.py b/whitebox_neutron_tempest_plugin/tests/scenario/test_multicast.py
index 7690869..6cd2c0e 100644
--- a/whitebox_neutron_tempest_plugin/tests/scenario/test_multicast.py
+++ b/whitebox_neutron_tempest_plugin/tests/scenario/test_multicast.py
@@ -504,7 +504,7 @@ class BaseMulticastTest(object):
                 # (rsafrono) Note, this delay is needed to make sure all
                 # receivers are ready. In some cases (e.g. SR-IOV) test result
                 # is unstable if we start to send traffic without this delay.
-                time.sleep(5)
+                time.sleep(10)
 
             for group in mcast_groups:
                 LOG.debug("Starting script for group {} on "