Best way to monitor performance?

To monitor performance I used to just trail the FPS from the perform CHOP.

However, I noticed that when I have an otherwise fast project that does something to cause a momentary chug (load a big file or something) that the FPS neer drops to zero, even when the project is visible frozen.

It might dip to 20FPS, but, since Touch is frozen, that graph doesn’t update.

If I want to know how long Touch was stalled for - what is the best way?

Monitoring “dropped frames” seems like it may be better, but I don’t know what that means.

If my project drops 10 frames, how long was play back stalled?

If I were watching a movie of my project, would it go from frame 20-30 or would it just hold on frame 20 and then skip ahead?