sure, but even at a 1% scale you still get the very same issue - and a horrible performance.
For cliff caps at 45degrees it’s just much better to use a dedicated mesh cap.
EVEN if you have to create a HISM BP and add however many 1m instances to cover the area…
Because it’s purely visual, you can also define the height of the cap to be modified in the material.
The alternative to it - think fortnite - is to just not allow 45degree cliffs…