Based on what a lot of actors say about filming with greenscreen, it is pretty damn boring. You either have to use your imagination and pretend you're looking at something amazing or interesting or you just stare at a blank screen until the director tells you otherwise. I imagine it can't be much fun for most actors.
I think it depnds on the performing backgrounds of various actors. Ian McDiarmid compared performing in front of green screen to working in the theater. Where there are a few props and little background and mostly curtains. He had no problem with green screen.
Though I could see how actors whose experience is mostly in film and televison would be different. In which sets are fully constructed and shooting is on real locations.