They talk about a “bounds parameter” in here and that it should help if you higher the value of it in actors: https://forums.unrealengine.com/development-discussion/rendering/101047-character-mesh-disappears-at-certain-camera-angles with the solution in here:
Skeletal Mesh disappearing - Pipeline & Plugins - Epic Developer Community Forums
However, that didn’t work for me. The only thing that worked for me in making the actors visible was to change the material on the floor that the actors were on, sadly, because I haven’t yet figured out anything else.