game lag for no reason? good internet.

so for about the past month i have experienced "lag" on apex for xbox one randomly. i have never once had a issues prior and i have played since day one. so at first i could find a game when i solo queued for a week or two.. it would just endlessly search with no game to be found, but if i joined another players game we would find game like normal and i could play with no issue. that issue went away on its own luckily. then it was goo for a week maybe. after that i started like getting lag during game play.... my movements feel sluggish , slight stutter while moving, lower fps (40-50) ... its very noticeable.. no on screen connection alerts. every other game i play on my xbox runs perfect, on happing on apex..ea. customer support told me that they have no idea why this is happing and they are labeling it a "bug" they told me there is nothing they can do and to come here to the forums to try and find answers... i have tried every trouble shoot possible... rests ...power cycles ...factory resets, change dns, clear mac address, uninstall reinstall ,  reset router...opened ports for my xbox live...my internet speeds come up fast with speed tests.. im hard wired to the web NOT wifi... the only thing i can think of is i know ive read certain games need specific ports open for  a certain game in order to recive data from the servers...the only ports my isp opened where the ones for xbox live found on the xbox website not the apex specific ones found on ea's website. please some one help me ...i love apex and am actually kinda good at it haha this sucks ...help ya boy out please