@cybernetic I probably would not recommend taking compounds to failure, do it with some accessory work like on your keg day gey on pendelum or hack squat, and go until you get stuck ar the bottom and it won't move.
@cybernetic Definitely,
The only reason I can see is either the low volume, or that what you perceived as rpe 9 is more like 5. Not having a dig just trying to understand. Maybe some vidoe of the set that feel like rpe9 would be great.
@cybernetic 7 sets per muscle group per week is very low, might want to up that, to 9 - 12, maybe you just require shit load of volume. Are you trying to get stronger or looking better ?