In the developer tools, I can’t save the performance results. It shows a NotAllowedError

[ariehen]

Apparently saving is an issue with the current Electron:

Large vault on desktop: Loading workspace takes a long time

It is possible (but not certain) that this is a regression introduced by the newer electron version we use. Unfortunately, the newer electron also has a bug with saving the performance profile so we can’t have a look on where exactly it gets stuck for you. We’ll see if we can update electron version in the next public release (No eta). Mobile doesn’t use electron. The iOS/iCloud issue you linked is very specific to iOS/iCloud, we are sure of that.