I discovered the issue that cut my DL speeds in 1/2 for me was thr Norton I downloaded. Once I removed it from my system the DL speeds went back up to 850 - 920 again. The xi6 boxes were not the issue at all. I called Norton tech support and they of course had no answer why their product would 1/2 my 1 gig tier speeds. So for not the standard Windows 10 security is fine + I use the free version of malewarebytes to scan on occasion. I also have Xfinity xfi which adds another layer of network security for the home.
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Sudden major drop in download speed issue:
I have the gig dl sped tier and typically got dl speeds between 850 - 940 on the xfinity speed test. That is until last Friday when I removed 1 xi3 companion box and added 2 xi6 wireless companion boxes to my X1 ARRIS XG1v4 main box. Gateway XB6 TG3482G and all other parameters remained the same.
After installed the 2 xi6 X1 companion boxes my dl speeds dropped from aforementioned to 420 - 450. I spent hours on the phone with various comcast techs to no resolution. I restarted the gateway, unplugged the 2 xi6 from the wall A/C then rebooted the gateway, then re-tested the speed and still got 430 instead of 900 - 1000 gigabyte tier I am paying for.
A tech is scheduled to come out this Tuesday but based upon times past they are not very up on these things & even told me all they do is run cable usually. We will try a cable amp & gateway switch out probably. But sadly I think there is some serious throttling going on once these xi6 boxes are added to customers systems & they lose their 1 gig tier speeds.
What’s worse is nowhere is it mentioned pre-order that this can happen. If this is normal then it should be stated online & at the comcast store fronts but even those employees know next to nothing like the girl that got me the 2 xi6 boxes said she was new & who knows what she did in adding codes or possibly messing up something.
All I know is I was told the dl speed check should show near 1000 for the gig tier and the addition of the xi6 should not affect it. Again I unplugged them in my testing and still got 450 dl. I have called comcast multiple times and spent hours on the phone going through the customer corrals & hold times with none of the tech knowing hot to correct the issue. What to do?
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Well look what the Internet turned up. On a Comcast support page, the cable operator is now referencing an Arris XG4 DVR set-top, available in select markets only. The specs on the page don't advertise it, but multiple sources have told Light Reading that the product is a set-top that supports 4K Ultra HD and High Dynamic Range (HDR) video. And it may be Comcast's first 4K box on the market.
The XG4 DVR -- also apparently known as the XG1v4 -- is reportedly going live now or in the near future in limited markets, which would explain why the product is showing up on an X1 support page. It's noteworthy, however, that Comcast doesn't reference 4K support among the specifications. Comcast Corp. (Nasdaq: CMCSA, CMCSK) has already been dinged for falling behind on its 4K roadmap, and the company may be wary of promoting a product launch until the DVR has gained some traction in the field.
Comcast has not yet responded to a request for comment about the DVR.
Among the specs that Comcast does list for the XG4 are six TV tuners, a 25-minute buffer for pausing and rewinding live TV, compatibility with the X1 voice remote, and support for AnyRoom DVR and X1 TV apps.
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