A 9 months or so ago we experienced some issues related to inconsistent latency on upload (+500-1000ms or so) likely bufferbloat related. At the time we had a lot of trouble explaining to xfinity support people what the problem even was. Their speed tests all returned normal results so they either couldn't understand what the problem was or couldn't acknowledge it or something. At the time we ended up "fixing" the problem by buying our own modem and router and replacing the one that they provided based on a tip on a user support forum. That seemed to fix the issue.
Two days ago we started having a similar but slightly smaller issue (+0-200ms or so). Not enough to break basic web browsing or speed tests, but enough to break highly latency sensitive realtime services like live streaming. It started suddenly around 2:30pm local time and has persisted (intermittently) since then. It hasn't gone away on its own after a few days.. getting ready to fight my way through xfinity support.
Question: Has anyone had any success getting support or fixes for intermittent but moderately severe latency issues that don't show up on speed tests? What did you have to do or say to be taken seriously or get to someone who actually understands what latency is and how bad/inconsistent latency is a real problem?
Is this situation (either the latency or the support) any better with Comcast business service?
Any other tips on things I can do on my end to work around or mitigate upload latency issues on the xfinity network?
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