(Dell Windows 10 laptop.) The "virtual background" gives me a message every time I try to use a virtual background: "A solid color video background is required. Green color is preferred." By default 'I have a green screen" is checked. If I uncheck it, it says "your computer doesn't meet the minimum requirements for using this feature without a green screen." Their info is confusing and unhelpful, researching it hasn't helped. My laptop is relatively new, up to date, etc.......any ideas?