Hey man, same issue here, only when launching from carrier, experienced issue in GF Sinai. Everything works fine on any missions I set up in mission editor.
I go to do a JDAM TOO target mark with the helmet, drop my mark and it instantly starts drifting. Everything I can see on the INS side is fine. Tried it sitting still on the carrier as well and same result.
following…thanks for letting me know I’m not crazy.