Battery Drain on GrapheneOS

Hey there.

I am running GrapheneOS with Mullvad on a Pixel 7 Pro, and for the past few months it's been terrific. Just the other day, I noticed my battery is draining like crazy! When I took a look at battery usage, I saw Mullvad is responsible for 80% of the battery drain.

I've never specifically looked before, but my battery has been much more reliable than in the past few days. So I can't help but to think Mullvad is the culprit.

Has anybody else noticed this? If so, what can I do?

Thanks!