Why is there touch (offset) problem when I connect Windows 10 PC with my IFP, but the problem disappears if I connect with other Windows PC such as Win 7?

If you encounter touch offset problem with Windows 10, this is related with Windows automatically changing the DPI scaling size (not resolution, not aspect ratio) for different screens to present the best display experience to users. In this case, Windows 10 changes IFP’s scaling to 150% automatically but the laptop is still on 100%, which causes touch offset issue. Solution: To resolve this issue, please kindly change the scaling percentage manually after plugging cable to the IFP, and make sure both screens’ scaling percentage are the same(100% resolves the issue in this case). Please refer to the attached file for further detail.