Why is my print getting messed up mid-print?
For me, this looks like a cooling problem. Try to print this part 2-4 times in one print and get sure your fan is cooling all the time.

It is a known problem, if the layers get smaller, that they do not have time to cool down. So you're printing on a wobbling bunch of still soft layers, which result in what you showed on the photo.

In my opinion, this has nothing to do with the filamen.