We had an issue with the CPU load at peplink balance 580, with firmware 6.1.0 build 2863.
CPU load always reached 80-90%, sometimes goes to 100%, all WAN are used.
With the throughput 80-120 Mbps, is it normal ?
We don’t have firewall rules on the peplink,
Please try upgrading to firmware 6.3.4, this is the most recent firmware version for Balance 580 hardware version 1.
You can download the firmware via the device (see second image on my first reply), or download it manually on the Peplink website.
If the problem remains after upgrading to the newest firmware, please click here to open a support ticket with Peplink.