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Unsure what you'd be looking for from us from a technical perspective; however, this is a VERY real problem experienced by hundreds if not thousands of COX users specifically playing on the West Coast. Do some basic homework and you'll understand the problem. Cox should be on a call right now with someone from EPIC games and AWS to better understand the problem, and not just blanketly respond with "it's not on COX's end" because this is clearly specific to COX connections. This problem is recent, real and needs to be addressed. Else, I'm assuming a large contingency of folks will be thinking as I am (12+ yr customer), to jump to another provider who doesn't have these issues present. It's understandable that playing a video game and its general performance is probably not high on the priority list, but this is literally one of the most popular titles ever and provides entertainment/enjoyment to some of us. I've literally resigned myself to not playing anymore, which is disappointing because it's literally the only title I play anymore.
Ive been having the same issue as your and I am from San Diego also. The past week I gave Haste a try and it fixes these packet loss issues I am having.
You can give the program a trial and see if it works out for you. I know this is not a real fix but I love to game and I needed to find a solution since Cox won't fix these issues for a very long time.
If you read the above, I mentioned that when I'm in-game(Fortnite), If I set the region I'm playing on to "West Coast" I start to experience severe packet loss/lagging issues, however, when I set the region I'm playing on to "east-coast", I can play perfectly fine with no packet loss/lag. However, since I live in California it is not preferable to play on east-coast servers due to high pings, which means we are playing at a huge delay/disadvantage. As I stated above, I thoroughly tested 20 games each on both west and east coast servers and only had issues on the Fortnite west-coast servers, especially during peak hours. So I'm assuming the problem is how COX internet interacts with the "Fortnite West-Coast servers." Seems kinda silly that I'm making a big deal out of a video game, but I stream/play Fortnite as a source of income so this is a serious issue for me. This problem occurs on a daily basis. Everyday, I've been trying to research/find different ways to fix the problem but nothing works, seems like this is an issue on COX's end and is out of my reach. I've emailed support and they said they currently are investigating it, do you know if they found out what the problem is yet? It has been over two weeks.
I've heard of it, and I'm looking for a permanent solution, are you seriously paying $15 a month for it or you just doing the 14-day trial?