I have reported the issue to Xfinity as you have recommended and curiously they stated to get in contact with Roku support stating this is a "Roku issue, please ask support". So unless if proof can be provided - which I have seen none - that this is an xfinity issue specifically, please do not pass off customers to another support org without a warm handoff from one org to another. A 'good luck wish' is not appropriate.
This issue persists on multiple streambars. The issue persist across three Roku firmware versions including the most recent as of 2/28/2025 which is 14.1. Xfinity Stream app is 8.0 build 0. Issue is also reported to Xfinity on thread 'roku-streambar-audio-fluctuations-70-reduction-in-volume-intermittent-short-bursts-of-loud-crackling-audio' and here is the link to it. https://community.roku.com/t5/Discussions/Roku-Streambar-audio-fluctuations-70-reduction-in-volume-intermittent-short-bursts-of-loud-crackl/m-p/1048266#M13380
All roku stream bars have been through the following and the issue persists:
Uninstall / Reinstall the Xfinity Stream app, issue persists.
Streambars have been been factory reset, issue persists.
HDMI cable replaced with known good (does alternatively provides reliable audio and video between computer and 4k monitor), issue persists.
Power supplies swapped between soundbars, issue persists.
While issue is occurring, connect to an alternate TV which is a different make and manufacturer and the issue persists.
Same exact reduction in volume on my streambar and I have Spectrum and I dont think it is Xfinity or any other service. I dont think they know what the heck is causing it.
To be clear, the issue discussed here appears to be limited to the Xfinity Stream app specifically and Roku stream bars. Not to muddy the waters, what apps specifically do you notice a significant volume drop in as well as high volume pops and clicks in after 20-30 min of usage requiring resolution by exiting to the Home Screen and relaunching the app?
