Effects of losses on run CygX3 structure and dynamics. Top: temperature slices of runs CygX3 and CygX3_noLoss at time t = 9000 s. Two main differences appear: (1) The cooled beam is thinner. Its envelope closely follows the internal shocks structure in contrast to the non-cooled case. (2) The cocoon of the non-cooled jet expands farther at its basis, almost wrapping around the star, whereas in the cooled case, the cocoon has almost disappeared because ambient material has cooled enough to be blown back by the wind. Bottom: same as Fig. 8. The cooled jet (in red) is initially faster, but leaves the smooth phase earlier, after which point it is slower on average, as seen in the propagation plot.