So I started a new playthrough and kept getting an infinite load screen after the cutscene where Hans capon chases the boar. After the first time I had to re-do the hunt but made sure to save after in case it happened again. Sure enough I got the infinite load screen at least 4-5 times in a row, so decided to load an old save before the quest and then reloaded back to the original save and this seemed to fix it as it worked first time after this.
I’m hoping it’s not just coincidence as I only tested it once but for anyone that gets a reoccurring load screen triggered by a certain event, this might help. Hopefully it’ll save people from completely restarting quests from the beginning. Let me know if it works.