H2: Anniversary multiplayer sounds are different

I have an original Xbox One (not S or X). I know a few days or so ago, MCC was updated. Ever since then, the multiplayer sounds in Halo 2: Anniversary are different than the ones I’m used to before. The Battle Rifle firing (both in the background and me as a player) sound much different, almost like the BR from the campaign of H2A. The Ghost when boosting also sounds much different than before. This occurs in both custom games and regular multiplayer, and happens on all H2A multiplayer maps.

Has anyone else noticed that too? Thanks in advance.

Edit: I have now submitted a support ticket, just wondering if others experienced the same issue.