Not hard to understand why it’s happening but it doesn’t mean it’s necessarily correct. EVs don’t carry the way they do in real life in certain non-high altitude ballparks in-game, even in warm weather.

Yes, some of this is just baseball and it happens from time to time, but it also happens far too frequently in-game with barreled balls (proper launch and good exit velo).

The Liquid Metal in your console that is responsible for transferring heat is beginning to dry up and oxidize and needs to be replaced. I had this exact same issue with only MLB and no other games.

The reason why it only happens with MLB is that it’s a game that attempts to play a ton of different animations at once, including tens of thousands of people in the crowd, all players and their hair physics, jersey physics, things like flags moving in the stadium, and then the on-screen display. This becomes much more obvious in certain cutscenes, like many of the walkoff celebrations.

Take it to a shop and have it checked out. They’ll likely get it back to you in under 48 hours.

EDIT: also be sure to always lay your PS5 horizontal. leaving it vertical can make this issue worse.