Originally Posted by
mcours2006
Not sure why limit screws would help. They serve to keep the derailleur from going too far inboard and outboard.
It's either the cable tension, or as Campa4life suggested, the position of the FD.
I think OP mentioned that chain was coming off -- being thrown outboard over the big ring.
Yes to cable tension (have cables been replaced since 2014? install of the groupset?), and possible FD height above the big ring -- check this with crankarms parallel with the ground, as the teeth height I think varies by where they are on the ring relative to the crankarm.