Glitch - variable speed, even though a fixed speed has been programmed

[Frank Verberne]

Do you have some sample code that determines the walking speed? Do you also get variable walking speed with other input devices (like a mouse or joystick) or another keyboard? Is the variable walking speed specific to the new laptop; have you tried running the .exe on another (desktop) computer? These are a few questions that come to mind. Especially your code could be the source of your problem.