Selecting objects lags out Studio

[SubtotalAnt8185]

This might possibly be because of this:

Selection Improvements

UPDATE: Hey Developers! We’re thrilled to announce the full release of selection improvements. Since the release of the beta in January, the team has been listening to your feedback and working hard to adjust and make improvements. Original Post: Here are some features to help you more easily and accurately interact with complex scenes and models! Available today as a bundled, opt-in beta feature called Selection Improvements, these changes will be fully launched after we gather feedback f…

Disabling the beta might fix the issue.