We rarely miss a snipe, and that includes all the 1-4 second snipes. 5 seconds is plenty.
We monitor eBay's responses to the bids before yours real time and adjust automatically. So even if eBay is running 15 seconds slow becuase they are super busy we'll put your bid in at 20 seonds so that it actually ends up being placed at 5 secnods like it should be.
Because of that monitoring 5 seconds is fine.
Thank you