I wrote about this problem some weeks ago, but now the question is: "Why is touchpad works not so good as in windows". I tried some "experiments":

When I use windows and if I accidentally touched touchpad - cursor isn't moving, also no clicks occurring. So in windows working with touchpad is quite normal, but in Ubuntu ?f I accidentally touch the touchpad even with my wrist - cursor is moving etc. In Windows, the cursor moves only when I touch it with finger. And... If, for example, I hold one finger on touchpad and simultaneously move the second finger on the touchpad - the cursor doesn't move, however in ubuntu he does. He's "super sensetive" in ubuntu or what?

Also I tried to apply the option in "Mouse and touchpad", which called "Disable touchpad when typing", but nevertheless he isn't disabling when i'm typing...

Note: this option is circled in red frame, i dont know is it a good "sign" )

What can I do to fix the problem?