The Blur section was designed to have a slow, patterned build-up. Input signal is routed through the Blur engine by default, which slows down the overall attack time. To accelerate the attack time, you can: Turn the Mix down in the Blur section. This will bypass or partially bypass the Blur section. Turn the Blur Density down, and/or turn the Blur Pattern up. Both things will impact the buildup character of the blur section. Density represents the density of the echo lines that form the Blur reverb. Pattern is the pattern of those echo lines. Low value is irregular & patterned, high value is more linear.