I think when you talk about weights below about 50% of your max, almost no matter what your max is, Do feel different. 135, and 225, do NOT feel like they did when I first put them on my back. The experience is much different. Like, I could put 135 on my back right now and walk around with it like it’s a joke. There was a time in my life, as an adult, when I was not strong enough to unrack 135. But, unracking, say 405, feels pretty damn heavy and uncomfortable to me, much like it did when I first squatted it, even though I’ve done it for 12 reps, and I’ve squatted 560. I think the spectrum in general just changes. I would say squatting 560 doesn’t feel like anything I’d squatted before. The experience is different from what 315 felt like when I first squatted that.