Cesuim and lumen with hardware raytracing

Good Morning.
I have noticied some kind of problem with cesuim and lumen hardware raytracing. Clipped Region of Cesium are still casting some black spots and weird shadows i will show down bellow with Cesuim and without as well as with cesuim but in one with hardware raytracing on/off


Cesuim+ Raytracing


No cesuim + raytracing


With Cesuim but suppport hardware raytracing is off.

Is there a way to keep the hardware raytracing on as well as Cesuim while no having the whole space black. it can be fixed with Artificial lightning but i need it to be naturally littne for an interactive archiviz (Different Time of day stuff)