I used to experience similar WAN issues that I fixed by either rebooting or reconnecting on the WAN page. However, I noticed this was solved following one of this settings changes (not sure what did it, but don't have time to test):
- changed DHCP query frequency to Normal on WAN/Internet Connection
- disabled Apps Analysis on QOS /Bandwidth Monitor
- unticked boxes DNS Query and Ping on Administration/System
I don't know what triggered it, but since these changes the router has been stable, with no WAN issues or VPN disconnects etc.
Please let me know if this worked for you.
- changed DHCP query frequency to Normal on WAN/Internet Connection
- disabled Apps Analysis on QOS /Bandwidth Monitor
- unticked boxes DNS Query and Ping on Administration/System
I don't know what triggered it, but since these changes the router has been stable, with no WAN issues or VPN disconnects etc.
Please let me know if this worked for you.