I just started having that stuttering issue a few weeks ago, shortly after a windows update, all drivers and firmware are up to date on all of my hardware, all software related to hardware and drivers are also up to date, as is windows in case I wasn’t clear enough on that, I have yet to find any viable fix anywhere, and the issue only occurs on SWTOR, and nothing else, if anyone has found a solution to this issue, please post it’s details here. - Thanks