I think minimum effective volume and maximum recoverable volume as well as how high intensity gets can change.
Recovery is better on gear and with more food, which you can utilize better due to the gear and not get fat, so you can use more food.
Going on blast i can recover from more volume. In contrast: If I train with a natural regularly for example, and I was doing high volume legs during a blast, I would not expect him to do all the sets at the highest intensity possible and recover properly. Similarly when I reduce the gear, I cannot tolerate as much volume, and I do need to remove some working sets or intensifiers if I want to be able to recover well.
Second-because at certain points during a cycle tendons do not develop or repair as quickly as muscles, the rep scheme and tempo might have to change and that means I need to select lower loads. Some guys have very robust joints so it’s not as important, but small jointed, or lanky guys need to pay even more attention to this on cycle because that body type tends to have joints that are comparatively weak. Joints will get overworked, brittle or develop potential overuse injuries so you have to give them a break while continuing to train close to failure, and also train the tendons. In this kind of situation it’s good to increase reps and TUT, and decrease weight until joints can handle higher loads, less reps.
Last thing— if you’re on a cycle and have caloric surplus with good diet and training— every single session you should be progressively overloading. If not youre either A. A pussy B. Have a faulty protocol or C. Both
If you’re not making progress like that and youre not training like a bitch it means you need to adjust something