Afternoon sessions far easier than mornings for Schweser practice exams?

I can’t tell if it’s just me, and something about the way I perform on the afternoon session, but in all 6 of the practice exams, I’ve done way better in the afternoon compared to th morning. I usually got mid 50s to mid 60s on the mornings, and mid to high 70s on the afternoons. Has anyone else seen there scores inconsistent in this way?