I'm no light expert, but I think a quality driver helps manage heat with LED's. I run my hlg lights at 100%. They were some of the early version(s) released by hlg, and don't have a dimmer switch, so I have no option to dial them down. My hlg135 is nearly 6 years old, and has been continuously running at 100% from day one. I use it for veg, so it always runs 24/7 on. It's a flowering specific light, and noticed shorter stickier veg growth, compared to a cheap 100watt mars hydro in a neighbouring veg space. The Mars light tends to appear more white/blue, and definitely produces taller/less chunky veg results. The Mars veg tent also runs noticeably warmer than the hlg veg tent.
@Hudo recently provided a comparison of different light spectrums in his grow space ( I e. two plants/clones from the same mum).