Hi Eric, I’ve tested as many variations as I can think of with tessellation and each variation crashes it. In one variation I put a 1 in the tessellation multiplier while I had a heightmap plugged into world displacement. in that setup I tried checking and unchecking both Adaptive Tessellation and Crack-Free Displacement.
To see if it was perhaps an error with the material I swapped out my tesselation material for MI_GravelTile_01 from the Kite Demo and that also crashes it.
I’ve also tested a fresh project and it also crashed when using the same landscape with a tessellated material.
If it’s helpful I can upload one of the height map tiles I use to generate the landscape.
EDIT: Oops! I didn’t see that you had already reproduced it.