Seems a overkill to replace a rb750 with a with a rb1200. i just need pppoe, ospf and hotspot. For now i set all my routers to reboot every night which seems to help a bit. I have one router though that keeps locking up every morning even if i reboot it. Could multiple dude servers have an effect? Perhaps this could be the reason why the cpu runs up. Also found a thousand api logins from my radius server. Sent a support rif and they reckon i should change the routers as they don’t have enough memory. Upgraded firmware to 5.22 with same results, in fact it was worst. Downgraded to to 4.17 to get stability again.