…and leaves them on (I mean lights on layers that are turned off, while in a Neon viewport…)
I’m not seeing this behavior here. Can you attach a sample file and let me know if you are using a specific render plugin? Also, if you can tell me what version of Rhino 5 and Neon you are running as well that will help to make sure we have the same builds.
R 5.5, Neon version (Neon_10_x64_20130409.msi) Brazil
Looking for an example, I can’t repeat this behavior so mebe SR fixed it…