Yeah there’s definitely some funky stuff with D2R’s lighting system in some ways, I noted that light radius is basically useless in D2R and posted some comparisons in this thread here:
Negative light radius is working normally, increased light radius is just a tiiiiiiny bit on the very edge of your light radius. I hope they fix it so that it’s the same effectiveness as original D2. Ironic coming from a guy named “DarkMaster”, I know. 