Wonder if it’s a wattage floor issue?
@Qiskit It might be worth checking out this link. It’s possible there’s a lower limit on your trainer so easier, lower power sections of you endurance workouts end up higher than intended. This will be less of an issue as you progress and probably isn’t too big of a concern if you’re recovering well now.
https://support.trainerroad.com/hc/en-us/articles/360023967111-Smart-Trainer-Wattage-Floor