That’s a misnomer.
The landscape LODs it’s components. Each component at LOD 0 is a drag on tris count. Particulalry when dealing with the largest sizes.
Mostly, the problem is the fact it is no longer distance based.
If it were left alone back in .18, then scaling up and down wouldn’t have a huge impact on tris count because you could just reduce at what distance from the player the transition occurred.
With the current LOD distribution instead, you’ll end up with multiple LOD0 on screen which will literally kill performance on some GFX.