Okay. I have a fix for you. Edit: Go to Settings and uncheck "Fluid mouse input" https://forums.getpaint.net/topic/28852-line-jumpsskips-to-top-of-window-while-drawing/?do=findComment&comment=545624     Download and apply this .REG file (the attachment is a ZIP which contains a REG ... just double click on it). It will disable smooth mouse input via GetMouseMovePointsEx, which allows paint.net 4.0 to get mouse input at >60hz (more specifically, it enables getting mouse