Auto LOD is included in every major game engine and it can be good enough in most cases until it isn´t anymore. Like for example eyes or hair pieces which are suddenly missing. (these four examples show an active Auto LOD without the included Distance where it occurs) Depending on when those issues pop up, you could do…
Until your model is pretty simple like wall barrier , a box or like LODs are necessary . For a character Simplygon does an ok job already. As far as I know Unreal uses Simplygon and makes lods automatically . But in some cases LODs require decisions and compromises Ai incapable to do yet. There are also a semi-automated…