PXE Boot image | slow download time

0.0 00 Our good friend Heinrich wrote a great article back in 2014. https://thedesktopteam.com/heinrich/sccm-2012-boost-pxe-deployments-speed/ Recently I have been tasked to deploy some Surface Pro 5 devices and the PXE Boot image was taking just over 7 minutes to download. My goal was to reduce it as much as possible, but at the same time keep the integrity of the PXE Boot process. I found this fantastic post by J├Ârgen Nilsson http://ccmexec.com/2016/09/tweaking-pxe-boot-times-in-configuration-manager-1606/ it includes a table with his tests and the resulting speeds. In my case with multiple device models including the Surface Pro 5 I decided to go for 8 as my value for the key bellow. The 7minute download became a 1min 37sec download. Location: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SMS\DPName: RamDiskTFTPWindowSizeType: REG_DWORD The default value is 1 (1 data block fills the window) I was unable to use the RamDiskTFTPBlockSize registry key, as setting any values to it made the pxe boot fail….