I would try this. Make a supout as the cpu is high. There is no way they cant see the issue that way. Is your cpu still high. Want me to look at it? Hey, thanks for your response, I have sent that file to support and opened a new ticket. Downgrading to 5.6 in the meantime fixed it for me, CPU back ...

My RB450G just upgraded from 5.6 to 5.7 . It works fine, but the CPU usage get high in "dhcp" package. Anyone has this? I've seen this. Vanished after a while. Please send to support@mikrotik.com If you can reproduce it. I tried in factory default setting. When "switch all port"...

My RB450G just upgraded from 5.6 to 5.7 .
It works fine, but the CPU usage get high in "dhcp" package.
Anyone has this?