Everything is fine load about 1-10% until something happens and load jumps to 30-40% and never goes down until reboot of routerOS ... and also it doesn't depend to traffic load even if traffic is low load still 30-40% ... how can i solve that ...

V3.30 L4 CPU Athlon II x4 all 4 core to Microtik...

yes this happen to me also when i open ppp in the left list.

I don't use pppoe

i just use simple querys and php engaine to admining it ...