Problem - 8-9 PM until 7-8 AM throughput drops considerably (.81/2.4 mbps)
Service - Ultimate Internet (150/20 mbps), Premier Phone (TV non functional)
Equipment - Netgear N900 (Modem/Router) (first call to supports solution)
Computer - Windows 7 Pro, i5 3570, 16GB RAM
Location - Rogers, AR (Fiber > Coax > Home)
I am going to document this service complaint and resolution here. This same problem was present when we moved into the home March of 2011. It took a year and a half for the problem to resolve. We moved from basic speed package to Highest speed package hoping for an improved experience. During the process of resolution, Cox ran two new RG6 Lines (one to modem which never had problems - Arris, and one to the Motorola Modem) and we had to drop Television Service as it was never able to be resolved) also, two new drop lines (pedestal to side of home) were installed with no improvement in service. The only thing that I am able to confirm about Network is that anytime the downstream dBmV was outside -3 to +3 we were unable to receive content/data. According to Cox, they found an inverted tilt on the line and an amplifier that was performing erratically. No mention of any correction or fix that relates to the problem being resolved. We used a small union that drops the dBmV by about 3.5 and would install or remove it to keep the -3 to +3 signal. We are now at +4.5 with the union and speeds drop to unbearable shortly after 9 PM and return just before 7 AM on average.
I will be posting my Experience here and would be open to any ideas on how to resolve this problem as I don't have any faith in a resolution through Cox's Technical Support Service as the service works during the day when they can roll a truck, thus no problem to fix.
This is the Speedtest.net run to be used as the control (9:05 AM 03-05-2015
http://www.speedtest.net/result/4191012990.png (image)
Also added image of the Modems Connection (note that we a bit over the +3 and still have decent performance although latency is above the normal 15ms and DL speeds are about half the usual)
Here is my speedtest.net (Full Record of all tests when logged in)
http://www.speedtest.net/results.php?sh=4eec8b7f2612c73a88d1c4abf5029c99&ria=0
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