could you explain a bit why MacPro1,1 is better and what do you mean by hardware acceleration, also what changes did you do please.
also I ran this through OCAuxTools and got the following.
OCS: No schema for EnableForAll at 0 index, context <Quirks>!
OCS: No schema for EnableForAll at 6 index, context <Quirks>!
OCS: No schema for ForceAquantiaEthernet at 10 index, context <Quirks>!
OCS: No schema for SkipCustomEntryCheck at 11 index, context <Boot>!
OCS: No schema for LogModules at 5 index, context <Debug>! Serialisation returns 5 errors! Completed validating /Users/*******/Downloads/EFI/OC/config.plist in 0 ms. Found 5 issues requiring attention.
Thanks in advance.