Yeah, I see the slowdown when I make a 90M pointcloud and zoom in. It drops down to 3 fps here.
I guess the workaround then is to split up the pointcloud into sections and hide the other parts on layers. (And xref that file of course, but I trust you do that already)
Sorry for not being of more help.
"Thanks anyway for your help, and thanks to @Rhino_Bulgaria for responding via private messages. Rhino 9 WIP has a new feature for point clouds, which you can find in the discussion link below.
I’ve added some suggestions there, but the topic hasn’t been very active lately. I’m hoping to revive the thread and get the developers’ attention on this!"
This is awesome! Thank you so much for taking the time to explore with me. I have only checked back on the forum after going on vacation and I am pleasantly surprised. I hope the display mode is also useful for you.