So I have these grass details in my game, here is an example.
I recently ran a command that would make them canquery false to help better the performance since they do add to the part count a lot.
While it does improve performance in-game I can no longer work on my game studio has become so laggy. The lag is the same regardless of editor quality level. I saw this post saying this bug has been fixed but it definitely has not been.
Maybe as a temporary solution for staff (this seems to be a roblox issue out of my control). Make it so CanQuery during studio just acts as a boolvalue only being a true or false value that doesnt actually do anything until the game loads up. It seems to not increase lag during playtime only studio so this would temporarily solve the problem until a more permanent solution can be found.