Thanks for making a video and sharing that behavior.
I shared this with the performance team and we’ll use that info as we make more updates in the future. However, the behavior in the video would likely happen over the course of a longer period of time which most likely wouldn’t result in a crash.
If you click around the Designer and make edits to a project at an average pace (i.e. style changes, adding or changing interactions, etc), are you seeing a slow down or crash?