I’m guessing you’re just asking your graphics card to do more than it has resources to do.
Assuming these are both standard resolution monitors (not 4k+), do you have at least 8GB VRAM?
What display adapter are you running?
What resolution are you running your monitors?
Open your Notification Panel.
There will be two mesages suggesting you update your display drivers.
Follow this links.
There are updated drivers for both the May and June.
If nothing it plugged into the Intel display adapter, I’d suggest Disabling in in Windows’ Device Manager.
That’s what I’ve done on my own system.
This should fix the problems.
These “hybrid” graphics systems are a fricken mess.
Can you export the relevant objects to a new file, verify the problem still happens, and send us that, to tech@mcneel.com? If it only happens with the full file, send us that if you can - please include a link to this topic. If the file is very large, please SaveSmall, Zip and upload to www.rhino3d.com/upload to my attention.