T3 and Sync error after every reboot, causing severe lag and performance issues
Hi
I've been having connection issues for months now, despite multiple engineer visits, and I'm hoping to maybe get this escalated to the Network Team if possible please.
The Problem
After every single reboot, I consistently get 1 single T3 timeout on one of the 3.0 Upstream Channels (seemingly random which of the 5 it appears on + strangely the connection is slightly better when it's on one of the higher channels - 3 or 4) as well as a SYNC Timing Synchronization failure (SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing) in the network log.
This causes a delayed, sluggish connection that gradually becomes worse and worse the longer I go without a reboot. Despite decent speedtest results, online video streaming will buffer - even at 1080p, YouTube will take forever to begin a video. When online gaming, gameplay feels sluggish, delayed, and heavy.
I have literally millions of Corrected Errors on the 3.1 Downstream Channel. I know this is usually seen as 'normal' but I thought I'd mention it since I'm getting them at a rate of around 10,000 a second.
What’s strange is:
- My signal levels (downstream and upstream power, SNR, etc.) look completely normal since the last engineer visit
- There are minimal pre/post RS errors.
- The most recent engineer did a BRILLIANT job: replaced the faceplate, upgraded the Super Hub, replaced every coax cable in the house, removed an old splitter and isolator from the attic, and even changed my position at the cabinet. Everything inside the property should be fine now.
It seems like there might be something going wrong further up the line — maybe a problem with upstream channel performance, CMTS timing, or node-level congestion? Is there any way this can be looked into or escalated to the network team?
As it stands, the connection is verging on unusable. The problems exist at all times of the day. The connection never feels normal. Like I say, even at 144p YouTube videos hang for 10 seconds before beginning. Netflix buffers or degrades in quality every time I have a lag spike. Online gaming is out of the question (one funny example is that playing online on FIFA for example, my opponent takes corners, free-kicks a second before I even see them. It honestly feels like my connection is a second or two behind. I also have extremely high, measurable jitter.