ISP(hinet) here made the ipv6 works in an absolutely shitty way for some reason. Make sites got 2x ~ 3x latency randomly. And it also use some absolutely insane

ISP(hinet) here made the ipv6 works in an absolutely shitty way for some reason. Make sites got 2x ~ 3x latency randomly. And it also use some absolutely insane routing to make sites barely usable. (Or even unusable) I sometimes enable ipv6 in my router to see whether the situation have been improved. But it never be (as last time I checked it last year).