Thanks for replying Hristo!
I found this link which is asking me to change AutoScaleMode from "Font" to "None". And when i did, it worked for High DPI laptops : t560 Lenovo. Do you agree with this?
The solution that i am talking about is : https://feedback.telerik.com/Project/154/Feedback/Details/110745-fix-radform-layout-issues-when-the-autoscalemode-property-is-set-to-font-and-t
and the above solution mentioned in link is working.
Please let me know soon.