I believe the equihash autoswitch port might be broken. zcash has been showing as more profitable for at least the last hour on both the front page of miningpoolhub.com and whattomine.com, and it's still mining zclassic...
It only switches when last switching pool found a block.
Also there's some additional conditions to maximize profit. Pool doesn't switch all the time, but waits (20~40 min) for more profitable coin's difficulty to drop more.
This makes more profit than switching here and there all the time.