i've golded every licence in all prev GT so GT7 licence isn't an issue
it basically taught me how to drive on the road
racing on the limit, that's a whole different matter if the sims are have me to believe. but i think (hope) the issue is i don't feel how fast i'm going and i don't feel the grip on the sim. not that i've ever raced on a track but i know when my car is oversteering and understeering on the road (by accident not on purpose!)
will spend time in ACC, AC, rF2 with the DD settings thanks