note that if you use t_c_p_rounds then those need the setting instead of the master. rounds override the master settings. You dont have to delete them as those are required for rounds. But simply changing a setting in the master might not work.
Also, check if you see the players get switched in either console the chat or whatever (server logs?). If you see they get switched then you also see if that happens twice.
Images of the cp_rounds might help.