Just recently I started having an issue when I got near the castle, the issues seemed to start after I was banished from the institue, after I got a call over radio freedom, when I tried to fast travel there I got a CTD, thinking that maybe my game just crashed I tried it again, and even tried to approach the castle on foot, but I had the same result, I've checked all my mods and that doesn't seem to be the issue, I've gone back to earlier saves and can approach it without problem. If anyone has a fix I would appreciate it
