Try clearing your console cache. It's not a permanent solution, but it tends to help. Play with an open NAT as well. Best of luck!
Link to console cache instructions:
[spoiler]https://www.bungie.net/7_Clearing-cache-on-a-console/en/Help/Article/12539[/spoiler]
English
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There's hardly any security with open Nat and I don't want to risk it
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Nothing seems to help. So until I know what's happening in blaming Australian Internet
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Already done