Extreme lag in crucible?

For reference im in Australia, Is anyone else having extreme lag in crucible on destiny 2, i have at points over a second of delay consistently in PvP? my internet is perfectly fine ive ran speed tests everything i play other games my internet is top notch but only in destiny the pvp is unplayable as of the last month or so? what is going on? i ask my friends they all say there fine? but for me its literally worse then dialup. Help?