Multiplayer starts to lag for everyone halfway through with new Expansion/Update

Normally we play 4 people vs 4 AI and since the major update, we all get constant lag halfway through the game. This was never an issue in the multiple years we been playing till this latest update/expansion and its all of us getting the lag, so something must be broken in the multiplayer code. Very surprised I don’t see this reported all over the forum.

I saw one forum post stating issues with game becoming unplayable over time when people are using different game platform providers, but we are all on the Xbox Game pass version.

Since the update we have played at least 20 games and all of them have become laggy near the halfway point in our games if not sooner.

Same problem even with steam version. Previous update broke something.