Your software's green screen management is not upto the mark. For example, even my green screen video is clean and neat with correct lighting etc., the green screen is not replaced neatly, especially when done from a camcoder to Elgato CamLink 4K to the PC. You must add another another control under SPILL, as "SHOW MASK ONLY" which shows when ticked the checkbox, the subject in pure white color, that means, when the subject becomes pure white when ticked 'SHOW MASK ONLY' means that the green screen and the subject are excellently seperated. For example please observe this 'Show Mask only' (with Checkbox) in any version of Vegas Pro video editor. Thankyou.