Active Standby Load Balancing with Priority Group

I am currently trying to implement an active standby scenario with 2 pool members. Below is what i have

• pool member 1 - priority 2
• pool member 2 - priority 1
• load balancing - round robin
• priority group activation - less than 1

the server team are telling me traffic is still coming to both servers. do you think i am missing something here.