Update Device-Recovery.md

Recommendation about quick power cycle not being too quick

Author: sfromis

docs/Device-Recovery.md

@@ -28,7 +28,7 @@ Implemented for situations where a device cannot be reset to firmware defaults b
 #### Procedure
 
 1. Cut power from the device completely for 30 seconds
-2. Power the device on and off six times with intervals lower than 10 seconds and leave it on after seventh time
+2. Power the device on and off six times with intervals lower than 10 seconds and leave it on after seventh time. While it may work being quick, a pace of 2 seconds for both the on and off steps recommended.
 3. Fast power cycle device recovery should activate and the device should be reset to firmware defaults
 
 If you flashed a precompiled binary you can [reconfigure](Getting-Started.md#initial-configuration) the device using the web UI after the reset.