is lane control off even though you just have the alert on without aid? I turned mine off because I also have this similar issue of feeling floaty and not tight. I have fox 3.0 factory race coils in front and 3.0 shocks in rear tightened up the settings and still didn't solve it. it also only happens occasionally so i am wondering what it is. Funny thing is sometimes it makes me feel like i'm about to lose the rear end or understeer since it feels very unpredictable.
based on what others have suggested it definitely seems to be a tire issue, running these offroad tires maybe don't make a good combo package with the truck and they are made for a heavier load perhaps?
