Slowly Edit Mode in Photogrammetry

Hello, I’m a blender user since three years, I love it, but I work with many photogrammetry model with millions of polys. I’m desperate with Edit Mode Mode when I should work with them, it’s extremely slowly. I’m a power station but I can´t work with is. I would like propose you improvements in this regard. Thank you very much. Regards.

Developers are aware of the problem, but don’t expect quick results about this: