Or you can just download any recording software (Fraps, Bandicam etc.) and just use their screenshot-function.
Then you'll just have to press one button and it saves the screenshot automatically and you'll not have to worry about tabbing out and pasting in paint.
Regardless, if you don't buy a external recording-device (uses CPU from another computer) then I don't think you'll be able to record with 10 FPS.