Does the CPU have a big impact on D5?

In general, different CPUs have little effect on D5. However, it is recommended to turn off CPU overclocking for stable performance.

Devices with Intel Core i9-13900K and i9-14900K processors running D5 and other DX12 software may experience flashbacks, crashes, 99% loading freeze, and pop-up messages indicating "Some DLL files in the system are missing" or "Program startup failed". Please try to update the BIOS to the latest version first, if it is still abnormal, please disable the CPU overclocking and Turbo Boost/restore them to the default. You can find relevant content at Intel Processor Instability Causing Oodle Decompression Failures