Rhino 6 viewport slow performance

Hi everyone,

I am using Rhino 6 SR6 (6.6.18 education version) for windows 10. It is a 64 bit version.

Every time when I try to rotate or move around the viewport in perspective view, its lag. Even when it’s empty with no object, and I try to draw a line, it’s not smooth when I move around.

I am using a laptop with
Cpu i7-8750H with 32 GB ram
So it should be fast and smooth. But now even my Macbook pro is smoother.


NVIDIA Corporation

GeForce GTX 1070 with Max-Q Design/PCIe/SSE2

OpenGL version: 4.6.0 NVIDIA 391.48

Render version: 4.6

Shading Language: 4.60 NVIDIA

Driver Date: 4-17-2018

Driver Version:

Maximum Texture size: 32768 x 32768

Z-Buffer depth: 24bits

Stencil depth: 8bits

Maximum Viewport size: 32768 x 32768

Total Video Memory: 8 GB

Please help me to solve this problem! Thank you!

Hello - can you please run the SystemInfo command in Rhino and copy/paste the results here?




Thank you for your reply. I just tested and realize it got smooth when I am charging!
But once I remove the plug it began slow again, is there a way to set the computer to always use high performance? Thank you!

Hello - if your system has a dual card, set the NVidia control panel to use ‘Maximum performance’


Does that do it?


Hi Pascal,

The settings of NVIDIA control panel was already maximum performance, but when I unplug the charger, it is still having a very slow performance.