This lines up perfectly with what I experienced last year when I compared the Mac Studio v1 to my 2019 Mac Pro. It beat the Mac Pro in almost every test that I ran, except when it came to r3d debayering in Resolve. the Mac Pro always was so much faster.. Have you tried using redcineX? I don't quite remember what I got there.. but overall my takeaway was that the dual GPUs in the Mac pro were just SO much faster than the Mac Studio. It can't be that they didn't optimize Resolve in the meantime, since they optimized so crazy for M1 hardware in general..