TCN BPDUs in Large L2 network

hi all

when there is a change in the STP topology, the switch will send a TCN BPDU toward the root switch, then the root switch will send TCA flag to all switches to age-out thier CAM table = Farwarding delay instead of waiting to 300 seconds (by default).

so if you have a large L2 network, so probably you will face a lot of changes per minute,

will not this cause issues in the network performance ??

because again the switches has to rebuild the CAM table and flood the arp request ,,, etc

thanks,