Thanks! I haven't worked much with vegetation in Unity before. Initially when I just let all the trees render at any distance, if I looked far across the terrain it would drop to ~20 fps on my machine in the web build. The asset pack with the trees didn't have any lower-poly alternates for LOD, so I was looking into a billboarding solution but couldn't get it working in time, so I settled for just culling the trees at distance so I could finish up some other things. I'll definitely keep looking into this (and other avenues for optimizing performance) so I can have more detailed environments in my future games!