I am not sure if this is the cause, but a recent update that has been rolling out to users in the past few weeks has been causing lots of issues.
Link: Studio Design Refresh - Docking Overhaul & Ribbon Upgrade
For me, I cannot work on any games whatsoever. Editing scripts is a nightmare. Code takes over 20 seconds to render and studio runs at as low as 12 FPS. This is on a high-end MacBook Pro which, prior to this update, ran Studio flawlessly.
Nearly everyone I’ve spoken to has had some troublesome experiences after updating studio, so I would not be surprised if you are in a similar situation. Unfortunately there is no way to revert this update.