It does have some early CGI, this is true - though to refer to the animation as stunning is perhaps overselling it a little. It was also in 3D originally, but the production wasn't started as a 3D film - since the 3D process used here required a 2.35:1 aspect ratio, parts of the film that were drawn before the producers moved to 3D are severely cropped at the top and bottom to fit that ratio, rather than actually being re-animated in the "scope" ratio. Definitely a project done on a tight budget, it's mostly interesting as relatively early, flawed work from companies that are now some of Korea's more prominent animation studios - most of the film was done there, and a Korean company holds the copyright to the film. I'm not sure the degree to which Filmation was involved, or why they're not mentioned in the credits, but they did have something to do with it IIRC. Also notable for being thoroughly politically incorrect in true '80s style, with heroes smoking and sexy robots getting spanked.