Tue, Apr 21, 2020 6:00 PM
I just upgraded plan to Gb internet. Modem is Arris 6190. Still running at old ≤300. Do I have to do anything to the device to get speed up? I thought this was taken care of using DOCSIS by their side.
6 m ago
Same issue. Windows 10, LAN on MB (10/100/1000). MoCA filter and splitter where cable enters house - one leg to video distribution box, second leg directly to my modem. Had 200 MB plan and was getting around 180 MB. Upgraded plan to 1200 MB and modem (Arris SB8200, DOCSIS 3.1), Cat 6 directly from desktop directly to modem port just to test - would "spike" speed to around 700 MB then immediately throttle down to 320 MB - 380 MB. Reset and reprovisioned modem twice. No change. Had Comcast Tech out who checked speed at pole (1200 MB), speed at tap for house (1200 MB), speed at modem (1200 MB) with "excellent power levels). Add SB8200 in the mix and speed drops to 320-380 MB. Tech said "Speeds based on our equipment. SB8200 might not hold full boot file. Try our Xfi modem." Did that - same speeds. Would spike to around 600 MB then drop back to 320-380 MB. Hmmm, ok. Try another gig speed modem. Got a Netgear CM1200 yesterday. Set up with Cat 6 direct from desktop to modem. Testing wee hours of the AM and get a little better but not much - certainly not 1 GB.
Using speedtest.net app in W10 rather than browser test - Browser test is consistently 50-100 MB slower. Upload is fine. Modem reports:
I'm at a loss to explain why I'm not getting the plan's reported speed. I think I've isolated just about everything on the system except changing out LAN card in desktop but I'm thinking that's not it since I was briefly seeing 700-800MB before it dropped back down to 320-380MB. Coax cable from tap on line to modem - check (good - no interference, no power drop, per Xfinity Tech). Cat 6 - check (good, tried two different ones). Modem - Check (three different modems, three different manufacturers). Power levels in spec - check (Xfinity Tech confirmed).
I'm at a loss to figure this out. Hopefully someone will have an idea.
Please create a new topic of your own / re-post (copy and paste your post) here on this board. Thanks. Year old dead now being closed.