This allows you to create flowing, dynamic linework with tapered edges. Pen Pressure sensitivity allows you to change the width of your stroke through the amount of pressure applied through your tablet pen. For Wacom, tablets click Remove under All User Preferences. Change your settings to TabletMouseSimulation = 1 in Misc settings.Open Help > Options (If you are using V.1 of PaintTool SAI, this will be located in Others > Options and set Click Detection Pressure to 0.Make sure your tablet drivers are updated and delete old ones from your hard drive.Try the basic fixes first such as restarting PaintTool SAI, your tablet, or your computer.Check the Min Size of your brush settings and make sure it is less than 100%.Set “Minimum Pressure” or “Click Detection Pressure” to 0 5 Advanced PaintTool SAI Pen Pressure Sensitivity Fixes.5 Basic PaintTool SAI Pen Pressure Sensitivity Fixes.