I have a RUT240, and when I ping to the LAN side, I get ping time of ~1 ms
When I Ping the WAN side (the DHCP issued IP from the ISP) of the RUT240, I get time times between 100ms and 400ms. The Rut240 is really slow to handle the traffic. It was not like this when I installed it, it added almost nothing to the traffic time. This is affecting the whole network all network traffic outbound to the internet is slowed by this amount.
I am not using QoS or port forwarding. I have the most recent firmware. In fact, it may have started just after recently downloading and upgrading to the latest firmware.