A new mechanism was added in 1.3.2 to supply an output clip for the effects so that they could reduce the amount of work that they perform. Unfortunately the Reflection effect does not yet calculate the appropriate input bounds for the indicated output clip and so it forces its input to render its full size even if only part of it will appear on the screen.

This problem is mitigated by the fact that the Reflection effect performs its work in user space so the amount of memory required will not be affected by large scale factors on the transform of the node being reflected. There may still be problems with really large inputs that have not been clipped elsewhere, though.

(Note that, in addition, because of RT-9223 the Reflection also does not clip its output to the indicated bounds either and both combine to cause it to behave poorly under large scale factors.)