My 2015 GTR at Road America 5/22/21 HPDE by MVP Motorsports. 2 minute 22 second laptime; room for improvement yet. Rolling lap was 2:21 and theoretical best lap 2:15. Gives me something to work on :) Beautiful blue Porsche GT3 RS passed in the beginning; let off a little for him, and some fuelcuts in straights...sump issues with Radium setup. Hope to have fuel sump improved for 2022. 
This was on lowest horsepower map running E75. Managing the brakes by being somewhat conservative in brake zones. 
It is 4100 lbs with me in it, so safety and respect are paramount; sneaking up on the combination...but it sure is fun!