After do some investigation, just found out our organization is add in Steelhead to our WAN system. The steel head help alot as what you see the testing report at below.
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do not have steelhead
steel head available
8m above( cause respond time out)
*this testing is base on 45M notepad file
*respond time out due to take too long to upload ( you can change the setting and web config ) or you can use the multiple upload file to resolved this issues.
**steelheed conside as one of the tool for WAN optimization or accelerator.