TCL 65R615 Volume Suddenly Lowering When Using Nvidia Shield Pro
For the last two weeks the audio on my Roku TCL 65R615 has been suddenly dropping very low after about 40 minutes of using any app on my Nvidia Shield Pro (HBOMax, Plex, YouTube, SOundTV). The volume numbers do not change, the audio just suddenly drops very low. This happens over both my HDMI ARC soundbar and my 3.5mm headphones plugged directly in to the TV. If I switch to another HDMI device or Roku app the issue continues. I must power off the TV and bring it back up to fix the audio. This means I have to do this three or four times during movies. It also continues to gradually lower if I try to ignore it and pump the audio up. I eventually was able to go up to 100 volume from my usual 12 and still hardly hear anything. It does not happen when using other HDMI devices for long periods of time. Here's the info typically requested;
Sys Info + Issue Report Tracker: https://imgur.com/a/PCCtoWK
The Shield Pro is on 9.1.1 which is the most recent update from months ago. The TV also last received an update in December. I really hope this is fixed sooner than later, I absolutely cannot afford to replace it.
Cheers!