Well for me, I use the default mod, 10tf(if not less), and normal grav/-30 grav this depends on what type of replay. Your problem with not getting dms, it can be hard if your just starting, i know it was for me. But one good way is to have a good starter, then like 2 seconds away from hitting them, press E. It'll let you edit the replay. This'll let you change things, play around with other joints, and hopefully help you get the power you need to get the dismemberment.