Halo 2 Anniversary gameplay volume extremely low

I’m playing through all the Halo games again. Just finished CE and all went well, despite major fps issues on Xbox One X. I started Halo 2, and the sound during gameplay is way too low. The dialogue is barely there. Cutscenes are normal. Apparently this is a common issue, and I haven’t seen a fix yet. Any solutions?
Frame rate is also dismal when using the remastered graphics.