VBA API Copymemory在64位运行比32位运行慢很多，什么原因？

[yixingpo]

大家有遇到标题的问题么？64位系统引用copymemory明显很慢很慢

举个例子：同样拷贝arr&(1 to 1000)至arrb&()中，100000次。CopyMemory arrb(1), arr(1), 4000

#If Win64 Then
        Const MemoryUnit As LongLong = 8
        Declare PtrSafe Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (pDest As Any, pSource As Any, ByVal byteLen As LongPtr)

#Else
        Const MemoryUnit As Long = 4
        Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (pDest As Any, pSource As Any, ByVal byteLen As Long)
#End If