the CPU utilization is very high when my au3 program call external program or cmd

[achen 0]

the CPU utilization become very high when my au3 program call external program or cmd

example code:

run(@COMSPEC & " /c (copy /z "srcfile dstfile" ,"",@SW_HIDE)

when run the script "run", the CPU utilization become very high. but if at the cmd line, the cmd "copy /z "srcfile dstfile" wont make the CPU utilization become very high. of course, if use "filecopy()" wont make the cpu utilization become very high too. but i want use the cmd line "copy", can you make the utilization become low?

thanks very much!!!