I use quite a few apps on my Roku Ultra including Netflix, Crave, and Prime.
The Netflix volume is about half the average volume of my other apps.
I find that I am frequently viewing Netflix content at full volume.
I'm wondering if this is something that Roku has any control over, and if so do they intend to address it?
Netflix for me plays at a similar volume as everything else so it doesn't appear to be a systematic problem affecting everyone.
When problems are confined to a particular channel, it may be that the channel did not install correctly, has received a faulty update, or has subsequently gotten corrupted. A reinstall of the channel to get its latest version may fix the problem, so give it a try. Remove/reinstall procedure:
Let us know how you make out.
Just as of last week I started having to turn up Netflix too. Not sure why. But a big deal for me. Just adding a data point.