Anniversary Campaign Issues not even noted?

Am I the only one getting increasingly frustrated about the massive FPS issues in the anniversary campaigns? It seems like this issue has been ongoing for a year, since Reach came out for the MCC. I paid $60 for this game, and I personally only did so because I wanted the Halo 2 anniversary campaign. Now it runs so laggy with such severe FPS drops that I can’t even play the game, I just end up going back to classic graphics.

How has this not even been acknowledged? Is there any possible workaround? I’m on an xbox one x, but I’m seeing others report this issue on a variety of set ups.

How can the seasons continue to roll out unnecessary new cosmetics when the game is fundamentally broken, and isn’t even being worked on?