May be a dumb question, but I recently reformatted a friend's laptop (HP Touchsmart 15-f010wm 15.6-inch Celeron N2830 4GB RAM) to Win 10 Pro x64 from Win 8.1 Pro x64... The laptop, just reformatted (with en_windows_10_multiple_editions_version_1511_x64_dvd_7223712),with all updates installed, Flash Player, Java, and only Firefox... feels slower than a bloated x64 Win 8.1 Pro that came with the laptop + more software, as well as more 'washed out' overall in the screen. Not a whole lot, but constantly noticeable. Tried installing the default graphics drivers from Windows update first, no go, then I installed the drivers from HP website, still look the same, ok. However, what puzzles me more is that it feels slower than a bloated 8.1. I will remove even more crap using the TweakScript from here, and also fool around with Intel's Graphics options, but if anyone has any suggestions... Thanks for reading.