In the situation, the performance of a group is likely to be less because the group fails to modify dysfunctional/defective norms.
Conformity can be explained as the change in a behavior or belief of an individual to better fit in the group pressure. The pressure of group pressure can be seen in different forms, such as bullying, teasing, criticism and etc. While on the other side, deviance can be explained as a behavior that violates/ disobey expected rules of the society or group.