I bought a copy of Chief Architect Home Designer 2015 Professional several years ago and reinstalled it last night on my Dell Inspiron laptop. The 3D graphics worked fine on the laptop itself, but as soon as I plugged it into my Dell DisplayLink port replicator (to use some external monitors), it gave me a warning message upon launching that it wasn't using the recommended graphics drivers. When I began working in the app and tried to perform a 3D render it gave an error message and failed to do the render. I did some Googling and found this simple solution which worked like a charm. I just wanted to share it with the community in case anyone else is having the same issue.
https://www.digitalcitizen.life/set-which-video-cards-are-used-apps-games-windows-10/