If nothing else this is a validation of Win7's continuing worth: http://www.techspot.com/review/1042-windows-10-vs-windows-8-vs-windows-7/
There's one interesting thing at the end of this speed comparison - when he mentions some slowdown in games and there's link there to how to "uninstall Windows 10's Xbox application which is built into the OS and cannot be removed via conventional methods." Code: https://thomas.vanhoutte.be/miniblog/delete-windows-10-apps/ Its not just this one app but the whole slew of them in win10 some of which, if not almost all, I'd personally never use anyway. Perhaps that might be part of modding last win 10? I mean removing at least some of these apps, maybe by some script after install?
Yeah, I saw that XBox reference, too. Maybe it can be disabled through a sysprep of the OS (for Last10 release), as it may not be possible by regging. NTLite can also remove that XBox app, if that fails.
Can NTLite remove it on the active system post install automated like nLite and vLite used to be able to?