it’s not just you. if you search the board here, you’ll see that it’s a topic that comes up pretty often. if your devices can do 5.1 audio, that usually fixes it. if you do standard audio, you’ll forever be stuck with low volume. I keep hoping they’ll change the transcoding settings in the background to up the volume, or give some setting in the user interface, but so far, no go.
all things considered, this isn’t a problem for me, as long as I remember to turn the volume down before I turn off the tv or switch to another app. (If I forget, I get a few seconds of youtube or hbo blasting)