Re: Battlefront II Campaign Massive Stutter
I had this problem too, nearly unwatchable first cutscene due to lagging/stuttering. I used the console command "RenderDevice.RenderAheadLimit 3," and turned off the Origin and GeForce Experience overlays, and it's 97% better. Still get hiccups now & then, but almost never gets out of sync, no more than 0.5 second pauses. I haven't played with it much to see which of those is important, I think only the RenderDevice command, but anyway it worked for me.
Hope this works for you. Found this solution at https://battlefront-forums.ea.com/discussion/82088/stuttering-lag-cpu-max-out-please-help