Its % of difference in profit needed for alfo switch. On this settings depends how often your miners will change. Lower value = more changes
Anyway i have a problem with ahashpool24h. Yesterday i ended on whole day nist5 mining without change, and at afternoon it lasts 2 hours to get payment share. So i changed to non24h version and now it changes too often. I have to play with gainpct value a guess and use non24h version
Thanks!!I'm understand. maybe.