Note that while you can apply traffic priorities to outbound traffic, nothing is applied to inbound traffic (only your ISP can decide the priority here as they are the ones sending it).   A guest could send a 100 byte request to download 10GB of data. You can apply the priority to the 100 bytes.  You can't assign a priority to that 10GB that gets downloaded.   As already mentioned, SSID bandwidth limits are often a better option for this case.  A hard limit of how much bandwidth that can be used. https://documentation.meraki.com/MR/Firewall_and_Traffic_Shaping/Traffic_and_Bandwidth_Shaping    Also note you can apply both a per-user limit and an SSID limit.  Using the per-user limit as well prevents one person from making the performance suck for every other user. ... View more