I made two small gifs about this problem (On UE4.16)
1) GIF LINK - WITHOUT SLOWED TIME
- just a ragdoll falling down some ramps.
2) GIF LINK - WITH SLOWED TIME
- the same scene, same ragdoll falling down some ramps,
- but I changed the global time dilation to 0.01 via button press just after the ragdoll hit one of the ramps. (See Debug Output: “TIME SLOWED”)
- I reset global time dilation shortly after back to 1.0 (See Debug Output: “TIME RESUMED”)
- the ragdoll bounces off with way stronger force than expected