Spring-Loaded Folders

Rest one finger on the trackpad.
Hover & Wait: Drag a file over a folder and wait (don't drop yet). The folder will flash and open.
Lift, then continue.
Rest three fingers on the trackpad.
With Three-Finger Drag enabled, glide files without pressing down.
Lift your fingers.

Speed 1.25×

Ready

Why it works

Hover & Wait: Drag a file over a folder and wait (don't drop yet). The folder will flash and open.