imo there's no value to switch to a softer site when you're playing micro stakes. I view beating 25nl and less as "practice" and sort of an investment. Because you really need to have the fundamentals nailed to do so. You can switch to a softer site and win more right now, but if you're a 5nl player you're not even close to being a good player (not meant to be an insult
). So in the short term I think you should just focus on improving as much as you can instead of worrying about slightly increasing your WR at 5nl by switching to another site.