Hey @botguage - apologies for any issues you’re having with your prototypes.
Have you also noticed that Figma seems to be slower overall? Can you take a look at your activity monitor or task manager and see if you notice Figma CPU usage is high when you are trying to preview?
If you can share view-only access to the file with the prototype that’s crashing, I can have someone take a look. If that’s possible, please share it with support-share@figma.com and provide the name of the file.
Thanks for responding - we actually fixed a bug that may have been affecting you. Can you please try refreshing to see if the crashing continues? Please let me know if so.