high cpu load on multicast switching

RouterOS General
1

Hello everybody. I’m new on this forum, so be gentle :wink:

I have a switch CRS226-24G-2S+
There is a simple configuration:

  1. eth1 is public interface with nat and simple firewall.
  2. eth2 is a master for 5 ports (Vlan) for 5 machines. they using this vlan for internet
  3. eth6 is a master for 5 ports (vlan) for 5 machines which sending multicasts and sending this multicast by eth15 outside.

Everything works fine, but cpu load is too high i think - about 80%.

Firmware version 6.30.2

how to lower cpu load?

all other options is default.

2

upgrade to 6,33 and cpu is still about 90%. Im trying to change vlan to bridget but cpu works even worst.