Just to add this data point here, it’s still crashing for me every time for the smallest sculpt even after deleting that cache folder.
Edit: Oh I can already update this. After you delete it, when you restart, as the landscape and shaders are re-loading, you have free reign to sculpt as much as you want. The second that the foliage comes in, it crashes. This is consistent with another thread on this issue indicating that the foliage is the problem. This suggests that a robust workaround (not sure it will ever be fixed if it hasn’t been by now) would be to somehow back-up all foliage data in a side file in some way, delete it all, sculpt the landscape, then restore the foliage data from the backup & fix anything that needs to from the foliage menu. If I can get that to work (or if I don’t), I’ll try to report my findings on it here.
Edit 2: Of course the other route is to simply keep deleting the cache folder and restarting as many times as you need. It’s time consuming but it’s robust. I wonder if there’s a way to postpone the load-in of the shaders & foliage data until you’re done with sculpting. That would be the best hack for now.
Edit 3: Scratch robust. The foliage loads in so quickly that it crashes a lot even doing this. I think if you delete a lot of the foliage on the covered area it helps.