Currently when I deadlift heavy my form breaks down and I get lower back rounding as soon as the bar leaves the floor, no matter if I’m in a good starting position or not. Other then that the lift feels ok to me and moves fine in terms of bar speed. However, what tends to happen is I get some back pain in the following days. This has happened over and over for months so I have now concluded it’s not me adapting to an increased load or anything like that. If I didn’t have any pain I would probably just keep going. But now I’ve gotten a bit scared of hurting myself.
So the question is, how to progress from this point on? I know I can decrease weights to where the form is good and go from there. But then RPEs and all that go out the door. Not possible to do a 1@8 or something like that. I could pick a weight where I can do a single with good form, but it wont be a 1@8.