I notice that copy file from PC to device is very slow when the file size is large (~6-7MB) as compared to copy and paste file directly from Windows Explorer to device.
I change the FileCopyBufferSize to 256K and 512K, 1.5MB takes ~12 seconds. 256K is optimum setting I find out from my project, e.g.
mRapi.FileCopyBufferSize = RAPI.EFileCopyBufferSize.MaxSlice_256K;
Is there anything I can speed up the file copying speed again?