FWIW, opening Rhino with the /NoSplash shortcut flag and setting it to automatically open Grasshopper helps quite a bit with the tedium in my experience. But if you have a lot of plugins you’ll of course still be waiting, but at least you can do other things while it loads:
You can also set per plugin loading settings, but I’m not sure if that’ll help here:
Edit: Loading directly off disc appears to load a bit faster on my system, might be the SSD:
