Hey @lisagood sorry for dropping off, work has picked up and I have not had not much time to look into this. To answer your questions first, no the overlay only appears when using my wireless keyboard's + and - keys; the remote pairing through FLIRC doesn't have volume keys mapped. The overlay is the PMP one, not Windows. Buying a FLIRC may fix your issue if you find a remote with enough programmable buttons, but I wouldn't purchase one until we can get a dev to chime in on this.
I did look at the logs and compared with one of mine and these were the differences I noticed in the setup (your values listed first):
Windows Version: 10.0.14393 (anniversary update) vs 10.0.15063 (creator's update)
Audio setup: optical/2.0 vs HDMI/auto (I may be wrong here, as I could have misread the log values)
Graphics Engine: OpenGL vs ANGLE
I never looked at this issue prior to me applying the creator's update, so that alone may be the source (unless one of your machines is already running the update and isn't getting an overlay). I don't have an optical setup to test with anymore, but the overlay should appear regardless. Further, I switched to OpenGL mode, manually set my audio settings to match yours, and still got an overlay so I don't think those are the culprit.
The other difference was the remote key input--we have different logged key behavior, though it's hard to tell when you hit the volume keys (I found a sequence that looks correct, but again, could be wrong):
2017-07-10 08:39:42 [ DEBUG ] InputComponent.cpp @ 152 - Input received: source: "Keyboard" keycode: "Down" : InputBase::InputkeyState(KeyUp)
2017-07-10 08:39:43 [ DEBUG ] InputComponent.cpp @ 152 - Input received: source: "Keyboard" keycode: "Down" : InputBase::InputkeyState(KeyDown)
2017-07-10 18:38:18 [ DEBUG ] InputComponent.cpp @ 152 - Input received: source: "Keyboard" keycode: "0x5bV" : InputBase::InputkeyState(KeyDown)
2017-07-10 18:38:18 [ DEBUG ] CachedRegexMatcher.cpp @ 68 - No match for: "0x5bV"
2017-07-10 18:38:18 [ DEBUG ] InputComponent.cpp @ 152 - Input received: source: "Keyboard" keycode: "Meta+0x5bV" : InputBase::InputkeyState(KeyUp)
I've attached the picture of the overlay I see when pressing + or -, as well as some pictures of my settings. My audio settings are set to auto-select channels and device, device type is set to HDMI, passthrough enabled for everything, and exclusive mode also enabled.
@vlang I'm sure you're swamped, but do you have any insight as to why @lisagood doesn't get a volume overlay when changing volume in PMP (log attached in previous post)? Are there any known keys that will trigger a volume change, but not trigger the overlay?