Recently move to Rhino 8, while developing GH plugins using net48.
It seems when I start to debug with Rhino 8, the GH interface always takes a long time (1-5 min) to start, and the startup progress bar stops at “Loading remote assembly GhPython”…)
We are looking into it, there was a similar report internally the other day, waiting to get more info before creating/posting the youtrack. It is on our radar.
In my case there is always an additional window opening counting some errors and loading issues. I just didn`t see that window because it is kinda hidden when i am starting grasshopper while having an extra screen connected to my laptop. The window still appears every time, but gh works and i guess this is just because i have some plug-ins installed that are not compatible with rhino8…