Audio Out of Sync on Roku Xfinity Stream App

I'm trying to watch "The Edge of Seventeen" through the Xfinity stream app on my Roku, and the audio is out of sync. I tried rebooting the Roku, resetting the app, and uninstalling and reinstalling the app, and I still have the same issue. I tried watching another film, and did not have this issue. I also tried watching this film through the browser, and did not have the issue. Is there something specific to this film that's causing this issue? Are there other steps that can be taken? Thank you for your time.