What does 'roaming aggressiveness' do on my WiFi adapter?

My Intel Dual Band Wireless-AC 7265 adapter has a setting under the Advanced tab called 'Roaming Aggressiveness'. What does this do and is there any benefit to putting this on either Lowest or Highest?

Roaming Aggressiveness - what does this do?

This setting alters the signal strength threshold at which the WiFi adapter starts scanning for another candidate AP. Find this setting under the advanced adapter settings. The default value is Medium. Depending on the environment, one option may work better than the other. You may try other values to see which works best for your environment. We recommend you to revert back to the default (Medium) if you don't see an improvement with other values.

• Lowest: The WiFi adapter will trigger roaming scan for another candidate AP when the signal strength with the current AP is very low.
• Medium-Low
• Medium: Recommended value.
• Medium-High
• Highest: The WiFi adapter will trigger roaming scan for another candidate AP when the signal strength with the current AP is still good.

Source: Wi-Fi Roaming Aggressiveness Setting

So there any benefit to putting this on either Lowest or Highest?

As per above you need to experiment to find out what is the best setting for your setup.