We're currently seeing degraded network performance to China, affecting both AS4837 and China Mobile International (CMI) routes. We are not sure of the cause although it is likely due to fiber cuts between the US and China as it has been with previous incidents. The previous incident lasted only a few days so hopefully this one is fine same.
China Mobile has been re-routed to AS4837 to China due to CMI having even worse performance at peak time.