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Forum Discussion
ihlejohn
Mar 29, 2019Aspirant
Unstable download speeds using CM1000 modem with Xfinity
This morning my internet was working fine. Normally i have my cm1000 modem connected to my nighthawk x4s router and that router connects to my computer using an ethernet cable. I unplugged my compute...
ihlejohn
Mar 29, 2019Aspirant
Sorry it took a while I was having trouble uploading due to this issue so I had to take pictures with my phone and upload, hopefully they’re legible.
https://imgur.com/gallery/JhhxZzG
As far as I can tell the cable entering the house is the same as it was before but I can’t be sure. I’m using the same coax and it is tightened securely. Nothing has changed besides only using the modem at the moment. The problem feels worse than when I originally posted and there were obviously an increase in uncorrectable codewords.
After trying to upload those images channel 31 (channel ID 33) had 3824 uncorrectable codewords and 3609 correctable. But I’m not going to try to get another screenshot of that haha. And the ofdm channel increased to 203 uncorrectable.
https://imgur.com/gallery/JhhxZzG
As far as I can tell the cable entering the house is the same as it was before but I can’t be sure. I’m using the same coax and it is tightened securely. Nothing has changed besides only using the modem at the moment. The problem feels worse than when I originally posted and there were obviously an increase in uncorrectable codewords.
After trying to upload those images channel 31 (channel ID 33) had 3824 uncorrectable codewords and 3609 correctable. But I’m not going to try to get another screenshot of that haha. And the ofdm channel increased to 203 uncorrectable.
ihlejohn
Mar 29, 2019Aspirant
Forgot to mention I pay for 150 Down and it regularly tests at 200.
- plemansMar 29, 2019Guru - Experienced UserI've also seen cables get jammed back into boxes and get kinked, which can cause issues. Something to check
- ihlejohnMar 29, 2019Aspirant
So I went to sleep after replying last night and now that I've woken up everything is back to normal testing at 180 Mbps using xfinity's speed test. Last night xfinity support confirmed the signal was good and i should not have reduced speeds so I'm not sure what was wrong or why it's working properly now. Thank you for taking the time to help though!
- plemansMar 29, 2019Guru - Experienced User
Glad to hear everything is working well now! Let us know if the problem comes back