Apart from frame rate, you can't really tell how efficient your game is performing on lets say a mobile device.
Hmm. If only there was some kind of extension or feature in fusion that tells you how many events are checked and/or activated during each tick/loop of the event editor.
With this feature, you could know which part of your code is KILLING your CPU. This feature will become handy when you are optimizing your code. This allows beginners (including me) to know which set of fastloops to stow away into a deactivated group.
I see fusion as a blackbox and I have can only guess at how fusion orders and executes the events. But with this feature I can say, "Oh shoot! This chunk of events is getting checked every single tick and I don't need that!" and then optimize accordingly.
Just saying.