Really weird issue has been going on the last three evenings with my fiber Gigabit service becoming very poor specifically from ~5 PM PT to ~12 AM PT. The download speeds have gone down to 2-10 Mbps and the ping and jitter have gone up substantially with ping resulting in 34+ ms with high jitter to even the closest CenturyLink server that normally would give 1-2 ms ping with 0-2 ms of jitter. Upload speeds have gone down too but not close to as much as the download speeds have. What happens during this period of time is the ping goes slightly down every ~1-2 hours and the speeds go slightly up. Peculiar behavior.
Any ideas what has been going on and why this strangeness has occurred? I am using the C4000XG gateway with the latest firmware CGX007-01.02.05.12 but this issue didn't start until 3 days ago or so.
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