Client side is too slow?
It's like when my horse, moving at high speed, hits something (non-movable or movable) at some angle which causes an immediate decrease in speed instead of a horse rear. The horse movement animation stops working and instead my horse skips in the direction that i was heading.
Now i no almost nothing about anything you guys do, but it seems that the client cant properly handle the decrease in speed, and it happens more when a fast moving horse hits something that only marginally drops the speed.
Also just to make it clear: afaik, it needs to be an immediate/sudden decrease in speed, like hitting a horse or smashing through a shieldwall with a courser