I am on a PS4Pro and am getting stuck at the same point on this same quest. I’ve gone as far as tried using both my horse “Boxer” as well as “Pebbles”, and arriving at the lead, and the rear, and pausing and sitting for 5 minutes prior to crossing the line the goes ‘black’… to see if anything makes any difference or not. (I created a save 100 yards out from the magic line)
I have also ran the ‘Playstation’ version of “defrag” multiple times in hopes of that helping as well… all to no avail. I sat and let it sit as long as 30 minutes waiting to see if it would load with no luck. So those above me, how long did you allow it to sit??
I’ve been a gamer since the early 80s and I realize that all games have bugs. Just that bugs like these are quite frustrating, to say the least.