Totally true. A simple scene picture (2 actors, some furniture and a background) can take up to 1 hour of rendering with a medium range graphic card (nVidia 2080, for instance) in high quality. If the scene is a litle dark, this will be multiplied by up to 4x. So if you're about to render a low light simple scene at 30 fps, you may need 120 hours of rendering for 1 second of animation (30 frames). Yes, this is a 5 days non-stop rendering day and night work. So you'll probably need another computer to keep working while your renderer one is in use. A lot of tricks can be made to lower this time (starting by avoiding dark scenes, pre-rendered furniture, etc...) I managed to lower render times in DAZ studio to 15 minutes each frame for a decent quality result, but still, 30 frames are 450 minutes of rendering, more than 7 hours for 1 second of animation. All those tricks take work, time and/or limit what you can create. So yea, you need some invest to get a project like this updating frequently, or a larger human team, each one with their own good computers.
