Check user device usage

Good day

We are in the process of moving away for mikrotik and UBNT as cpe's and our biggest concern is to help a client identify which device is hogging all his bandwidth.
Is there a way to see what ip address internally is using all of the speed allocated to the client (mbps usage)

On mikrotik we used to use Torch that would give us the current usage and could then identify the device checking the dhcp server leases.