System (AUDIO) draining battery?

blackcat8

According to my battery usage, "System (AUDIO)" has used 32% of my battery over the past week. I hardly turn audio on ever, maybe an hour total in the past week and at pretty low volume. Is this a bug or is something draining it? When I first got my phone about a month ago I had maybe 1% battery drain overnight, now it's about 5%. I'm trying to figure out what's causing it to drain more and according to the battery usage this system audio has used a lot. If I look at Running services the only apps running consistently are Google Play Service, Message, Settings, GsmCompat, Keyboard, and Android Services Library. Does anyone know why and how to fix this issue?

Kras

I've also had some very strange systems draining on my 8 Pro. No problem with Audio, but here's a screenshot of my battery drain yesterday.

https://imgur.com/a/33dyFeU

For context I don't use the 'always-on-display' so can't understand why ambient display is so high (37%). Likewise I checked and no app had used location that day so I don't understand why GPS is at 25%. Meanwhile my screen usage is only 8% despite having been on for 2 hrs 15 at that time. Results are currently looking similar for me today also.

I've noticed other posts on the forums where people have had strange drain from mobile network and GPS recently.