I have been playing around with 4.1 RC1 since it was released and have stumbled upon a weird bug. I can only recreate it in one specific image and no other. Adding any type of positive clarity adjustment, be it 1 or 100, causes unbearable lag throughout the interface after zooming into the image. It's a 17mb raw image so I can't upload it here. When clarity is zeroed or adjusted into the negative, the image and application function normally. This only happens with this one particular file and no other. Other adjustments do not affect performance.