I tested **PerInstanceCustomData **for foliagein 4.26 and while the issue with LOD seems to fixed, i encountered another bug, where the render state doesn’t get updated when changing a value at runtime when starting a standalone or cooked game. In PIE it works fine though.
I have submitted a bug report, but it hasn’t been approved yet. Hopefully won’t have to wait for 4.27 to get it fixed…