What's a visual way to show a script (loop) is running that doesn't freeze AHK?

[Murica]

I made several GUIs that say "On" (every 10 seconds) but AHK freezes while the GUI is being displayed.

Is there a faster way?

[boiler]

Showing a GUI isn’t what freezes your script. It sounds like you just put in a simple loop with a 10-second Sleep between your GUIs being shown, so the Sleep is what freezes your script, not the GUI. Try using SetTimer instead of a loop.