Stroke Lag/Freeze Problem in Toon Boom Harmony 17 Pro

Hello Animators. I’m not sure if anyone has experiences this problem before, however anytime I use the stroke option under Paint >> Stroke, and I try to use it, it just freezes for about 5 seconds and then it creates a dot although I dragged all around my screen. I have a Dell Inspiron 17 which also has the advantage of touch screen, so I don’t use a drawing tablet. Please help with this problem. Thank you!