Hi,
Hoping for some help here. I recently updated my win 10 build 1709 which has yet again made my rhino extremely slow, like dial up slow. In the past I was able to solve this issue by uninstalling the latest update, but now that Microsoft has removed that option I am at a total loss. Is there anything I can do to get rhino working again? or does this mean I have to upgrade to the newer version 6 of Rhino just to be able to continue to work?
Have you updated Rhino V5 to SR14 which is intended to fix issues with Windows 10 Build 1709?
https://www.rhino3d.com/download/rhino/5/latest/rc
Are you running an Intel HD 4000 (i7) graphics adapter or the HD 2500 (i5)?
If so, slog your way into Options > View > OpenGL, and UNCHECK the top option for using accelerated hardware modes.
Any better?
Thank you for your suggestion. Just tried it and that didn’t work. the program opens but there is still a 1 min delay in zooming in the viewports and command response.
intel celeron 
OMG!!! Just tried your suggestion and you save my life!!! Thank you your recommendation did the trick !!!