Make sure most of the time you’re controlling the weight down rather than dropping it. Eccentrics and exaggerated time under tension are great for building strength and muscle mass.
I’m not a fan of using competition movements as your main mode of volume accumulation, in particular when there are already technical deficiencies. It’s too hard to stay focused on technique when you’re 18 reps into a workout. If 3 sets in you start getting tired and having sloppy technique, half you’re workout was spent practicing BAD technique. Once your technique starts to suffer, move on to something that is a non-competition variation of the main movement and accumulate the remainder of you necessary volume there. “practicing” sub-par form on a rack pull won’t screw things up as much as sub-par form on a sumo pull from the floor.
Just to clarify, when I say “technique” I’m talking about the minor adjustments needed to make the lift as efficient as possible. Under no circumstances would I recommend continuing reps/sets if form has degraded to a point of having injury potential, even if if is not a competition movement.