Wouldn't hold too much hope on this being fixed......I've put numerous comments on this feedback portal and like yours responded to many more too.
I've had game since day 1 and took out the season pass, from what I've experienced it was more than fine before the DLC content and the the lag / stutter / * began.
I've had a static IP installed by my Internet supplier just 4 xbox, Had my NAT Type opened, messed with selecting servers rather than automatic, checked my xbox online multilayer connection which always states good and no other game other than Dice Servers glitch.
Downloaded the beta Battlefield 1 and that stutters the same, as does my Battlefield hardline......any other game I possess online plays superb.
As I said I've challenged this for months but NOT 1 response from EA, either confirming the issue or offering other advice to fix locally........fantastic customer service.
Just tried again 2day and doing the same.....each time I log on here someone is complaining about the stutter. Can't be coincidence!!