Every time I am knocked off a horse, the game crashes. This has happened about a dozen times. Six of them I tested just to see if I could repeat the instance. Yes, every time it happened.
Running a R7 3800x w/ 2060 Super.
Tested with lowered frames, low graphics, high graphics, 60fps. Whole nine yards in between.

This is the exit by the way. Using fps drop or a torch is actually a glitch right now. You're supposed to swing around the other side of the mountain to get into the cave.

@ubi-baron Torch trick at 30fps worked. Switched fps back afterwards and it worked too. Torch seems to be helpful.