There might be a way around it. My game Need for Speed Carbon does the same thing when I go a certain speed and turn to a certain angle at the same time.
If you're running and your game crashes, try to go a route you don't usually go to get to the boars that the Bulblin Riders ride on and it might not do that. Wolf form might also do it.
If you're on a boar, the obvious solution is run.
I don't know if it would help but if there are certain conditions for your game crashing then you could try to do it a different way. If not I wouldn't know what to do.
If you're running and your game crashes, try to go a route you don't usually go to get to the boars that the Bulblin Riders ride on and it might not do that. Wolf form might also do it.
If you're on a boar, the obvious solution is run.
I don't know if it would help but if there are certain conditions for your game crashing then you could try to do it a different way. If not I wouldn't know what to do.