Description
Defines at what radius the Gaussian blur optimization kicks in (estimated 25% - 40% faster)The optimization uses slightly less memory and has a quality loss on smallblur radius 0: use the optimization always (fastest, lowest quality 3: use the optimization starting at a 3 pixel radius (quite fast 7: use the optimization starting at a 7 pixel radius (default>15: barely ever use the optimization (high quality)
