kinda interesting....
I had exactly the same problem for the first couple of weeks when I started playing PS5.
I was so f****** annoyed about this! I even posted an image of my screen where about 12 of my players were on red cross and out for several weeks (Rooney 44!!!!!!).I was thinking to even return the game. It was not playable.
At the time I used to leave my PS2 slim always on, night and day, maybe without playing for 3 or 4 days.Then I switched it off for some reason and kept it that way for a few days. When I restarted the game a few days later, unbelievably, the problem was gone! Completely! I remember that in every single game and every single tackle I used to get injuries, but after that moment, nothing. I can't even imagine what a relief it was!!! How smooth the game was!
Now...this is what happened to me, it's just my story. I am not sure if turning the PS2 off really made the difference and fixed the bug, or if it is just a coincidence...
I'd say to you give it a try... and let me know.Good luck!