Give Variaudio in Cubase a try, I have had good results with that. It has micro tuning and pitch quantization that helps to reduce artifacts. This won’t give you the keyboard mapping you would get in HALion, but it may help depending on what you need.
HALion is usually good for warping up/down a few semitone’s, I usually try to keep it around a 3rd-5th at most (you can push it further with drums and percussion). There is a sample quality selection in HAlions options, not sure if this works to improve warping (I set it once and have not changed it).
Hope this helps.