If you have a 4K display, you may experience your screen recordings not including the entire screen and part of the recording is clipped off. To fix this, you will need to adjust your Windows display settings and set your scale and layout to 100%.
Please note that this change may have the result of your windows icons appearing smaller on desktop. Once you are finished with your screen recording, you can readjust your scaling back to it's original setting to return the icons to normal size.