I don’t know if anyone has tried this but instead of using a set time between sets like 3-5 minutes, I wear a heart rate monitor and wait until my pulse rate drops out of my target heart zone before engaging in my next lift. From a strength perspective I have found this to work better than actually timing my lifts. Aslo ,using this technique I am actually stronger with lifts later in my workout or better yet on days where I might be a litte overtrained. Not only are my lifts better but my recovery from workouts seems better too. I don’t know if there is any hard science behind this but it appears to work well for me.