Rhino8 WIP Cycles rendering "flat" or not rendering

Hi @can.aysan
I’d start by updateing that driver - that’s almost 2 ½ years old. I that doesn’t do the trick, you might try the Repair option in the installer (Go to Windows Settings>Apps>Find Rhino in the list, the click Modify and choose Repair)

HTH, Jakob

PS Note that the Cycles kernel might take some time to compile the first time you run it - this is normal