Siege X running terribly

I saw other posts about this topic and im having similar issues. Im playing siege on 144fps, medium/high settings without any issues. My pc could do about 250 but my monitor is only 144hz. Now in Siege X with the exact same settings its a steady 80fps and its not spiking or anything it just doesnt go lower or higher. I was wondering if this is a problem that i can solve somehow or the devs need to do something. Thanks for the help in advance