RT-AC87U Traffic Monitor has weird WAN stats

[highwire]

Does anyone with a RT-AC87U (378.53) have WAN stats that make any sense in the Traffic Monitor? Even with CTF and FA acceleration disabled, my stats (especially WAN) make no sense. For example, traffic on 5GHz wireless within my LAN network is counted as WAN inbound traffic. So my local backups, done over 5GHz wireless, end up getting counted as incoming WAN traffic, which is definitely not the case. My ISP's tracker does make sense, so it isn't a matter of malware or anything like that. I did a factory defaults and manual setup and the problem persists. Does anyone have any advice?

 

[goldenegg]

I was getting really weird readings, but not because it was adding my local bandwidth to the mix. It just kept showing random incoming data spikes at 2 - 3 Gbps. The problem completely went away after I performed a factory reset on my cable modem. When it came back online, I was getting regular readings.