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I've had constant packet loss, latency issues, full on dropped connections for over a year now with Cox. I've wasted time on the phone for hours changing routers, modems, having technicians come out only to tell me that my internet is perfectly fine.
I cant video call (for work), game, or even browse the internet. I'm hoping someone can help.
What modem and router do you have? Have you tried bypassing the router? Could you post a tracert to Halo's servers?