After the upgrade from the previous stable firmware release to the current 5.12.9 the ISP load graph is all messed up. It only appears to show the latency (load is gone) and it has gaps and the graph doesn't match reality. I also did an in-place replacement of the ER605 v2.6 after the controller upgrade with an identical model as the first one was failing - that firmware is 2.1.2. The actual internet and response appears good, so there is no customer impact but I rely on this ISP load graph to tell me important details.

Note: I did open the browser in incognito mode (Chrome) to test this