Heat stress. If not light it’s heat. But if your lights are max intensity, even the intensity may be too much and regardless of distance. She is edge curling from over abundance of UV rays that are unable to be transported if that is the case.
Even heat stress will curl edges.
You do have a nice pray to the leafs, be worried if they canoe or taco. So just drop temps and see what happens first.
The next set of leafs from canopy look straight and no leaf curl. Thats a signal to me that the canopy may be getting too much light and the lower leafs are getting just the right amount. So put that into consideration as well. If it’s the top leafs making curls and lower leafs are not, it’s typically a light stress signal.
So you have those two things to tackle. Intensity and temps.