Resolution of point clouds VS Microstation

Hello there!

Please can someone help me? I am using microstation V8i SELECTseries 3, I need to work with point clouds and making 3D models. 

When I load point cloud to microstation with original resolution, it is so hard to work with it. I don't know if it is because low PC performance, or it is because microstation.

When I use another softwer for pointclouds on the same PC, it works with no problems, so why in microstation is problem with loading big point clouds?

When I degradate point cloud resolution in another softwer, from example from 2 000 000 000 points to 200 000 points its relative OK and I can work with it. But why I can not use full resolution in Microstation? 

Is new microstation connect better in working with point clouds?