Rotate freezes before completing

[GMP]

I  first made a copy of the layer + mask and chose "apply the mask" and I was able to rotate it fine, pretty fast.. I also tried this: deleted all the layers except the layer mask and it didn't work either.

 So in general would it better for me to always choose clip and not adjusting? In this instance I left it on adjusting.

  Thanks Rich you always come through with a solution.