Alright. So you are here because your Witcher 3 is crashing whenever you try to fast travel to Skellige. Doesn’t matter what node, if you do it by sign or by boat. You keep landing back at your desktop and it’s probably pissing you off. The first thing I want you to do is check your quest log. Do you “The Mystery of the Byways Murders” quest? Yes, yes you do. Unless you don’t. If you don’t then I don’t know what your problem is. But I’m like 99% sure you are currently staring at this quest wondering what my point is.
Next you’ll want to complete this quest. I’m going to keep my images vague so as to not spoil anything.
Once you’ve completed this quest find a place in Skellige to fast travel. Be sure to squeeze your ass cheeks together real tight before the next step. Now, ass clenched, click on the fast travel point.
I don’t know “Why” this quest is breaking fast travel. If you don’t have this quest there is a near certainty that one of your other quests is breaking fast travel. It’s probably this one. If it isn’t I just hope it isn’t a quest that is IN Skellige. Otherwise you are kinda boned until the next patch.