Right now, when I press anything on the Mac UI, it’ll take anywhere between seconds and minutes to do anything, and the entirety of studio will freeze. Taking a very long time to open scripts, to start test sessions. I’m literally on a blank baseplate with one script and two parts.
Anyways, I’ve been experiencing this same issue for the past year now. About every two months I am forced to create a new personal account on my computer and transfer all of my files to it. During this two month period, Studio becomes increasingly laggy until it is unusable. I’ve spent countless hours looking around for solutions with no luck. The only way I am able to revive Studio is to migrate to a new computer account. I’ve reset Studio’s cache, restarted my computer, and even tried using different Roblox accounts in Studio. It’d mean the world to me (and probably many other Mac users) if anyone could offer some advice haha.
I’ve also been seeing performance issues in studio recently. I have the same macbook model as the OP. Closing out all my scripts have seemed to do the trick for me. It always seems that studio performance issues on macOS are always ignored/neglected.
If you want a temporary solution (which is a pain but it works) make a new user account on your Mac and download studio on there, for myself and everyone ive given this solution to this appears to fix it.