I found this lap time according to the source here:
https://fastestlaps.com/models/bmw-m3-competition-n-a Looks like Sports Auto has not yet posted the video. This result is really decent but I was actually expecting something better lol. Driven by the same driver, the comp model is 1s quicker than the base model. So the performance difference is not that big. However it is a bit slower than M5 Comp. So I'd imagine the Nurburgring time would be somewhere between 7:35 and 7:40. It would be a different story with Cup 2 on tho.