Roach frequently gets hung up just about everything. Ill have him running over a bridge and right off he stops dead in his tracks as I approach the bridge, puddle, rabbit, or brush. Its awful and it makes the racing in the game all but impossible.
Also Roach's AI for sticking to paths should be togglable. Im sick of having to fight with that damn horse every step of the way.

I have the same issue - the horse just stops every few steps. It started to happen after 1.03 patch and was fine before that. Haven't been able to find what causes this.

I have the same issue.
Just yesterday I was unable to cross any bridge because of my stupid horse. Saving and reloading fixed it.