RPE or intensity will be lower and bar speed doesn't do much to change that.....but bar speed is a driver of motor unit recruitment so being aware and using warm up sets or back off sets to maximize bar speed is useful. It's something I'm aware of when I'm fatigue'd and its easy to start tempoing reps instead of just doing them.Getting volume out of back-off sets seems mentally a ton easier than doing triples for sets across at the highest RPE. I bet the bar speed is a lot better in the back-off sets. Speaking of that, do you think speed factors into intensity? For example, if I'm working closer to my 1 RM, my RPE will be greater but the bar speed will be slower. If I take weight off the bar, I can move it a ton faster and still keep my RPE high, can't I?