2D starter game input / frame rate problem

I created a starter game, built it and run it. But it works veeery slow.
When I press wsad keys there is almost no movement for garage games logo. About 1 pixel every 5 seconds.
But there is a punch line :) When I move mouse pointer over the task bar and tool tip for another window pops up the game starts running at normal speed. When the tool tip disappears, the game goes back to 1 frame per minute ratio....

Any clues?