I've tried KeyShot Viewer on my new self-assembled test environment:
CPU: Intel i5-12600KF (12th generation Core, "Alder Lake")
Motherboard: GIGABYTE Z690 UD DDR4, with DDR4-2666 8GB x2
also Motherboard: GIGABYTE Z690 UD, with DDR5-4800 8GB x2 [updated]
The BIOS/UEFI settings have hardly been changed from default.
P-core runs at 4.5GHz and E-core at 3.4 GHz.
Results:
2.39 on Windows10 Home, with DDR4 memory
2.95 on Windows11 Home, with DDR4 memory
2.96 on Windows11 Home, with DDR5 memory [updated]
It looks that Win11 is suitable for "Alder Lake".
BTW, the results for the good old camera-benchmark are almost same, 240~250FPS on both Win10 and Win11... a bit faster on Win11 though.
Also, for KeyShot Viewer benchmark workload, the performance with DDR5 memory is almost same as DDR4. [updated]