Dynamic line is miles ahead of static for energy dispersion. Meaning, that say it takes (for layman example simple units) 1/10th of a second for a static rope to arrest the fall of a 100lb limb exerts a force of 200lbs on rope. Now, a dynamic rope stops the same load slower, say 2/10 ths of a second, cuts the force generated on the rope to say 150lbs. No math here, been many years since college lol. The force on an impact will be a function of the time it takes the body to come to rest. That's why air bags work. Helmets, padding, dynamic lines, if you can spread the energy over a longer time, the force generated lowers proportionally.
Were not talking a lot of distance. The Dynasorb, you wont even be able to perceive the stretch. It's not like a cartoon, where the log is going to bungee into the shingles over and over until it is out of energy. Long time ago, I used to use dynamic rock climbing line meant to arrest the fall of a climber without injuring him. I have never had one of those lines break. I even used to dynamic load probably 1000lb loads, either with tops, or trunk chunks. That's because the load is brought to a gradual stop reducing peak forces which cause anchor points and rope to snap.
Dynasorb, according to specs, is actually less stretchy than some static rock climbing rope. Rock climbing/rescue line meant for non dynamic loading.