After having constructed most of this from the release-day state of Homefront: The Revolution and then performing some additional tests after the June 3 patch with a patch for multicore CPUs, I have found that the Object graphics setting still has a significant impact on the game's performance. It is better following the patch, but I would still recommend shifting it down if you experience any performance issues as you play. The Shading and Shadow options have a tremendous impact on visuals, so definitely try to have those turned up if you can. The save files are located in a somewhat obvious, yet still uncommonly used location, the Saved Games user folder Windows puts in your user folder. The game downloads all of the localization files it might need, even if you only need one language. While this could negatively affect the stability of the game, it appears to be possible to delete the unneeded localization files to reclaim some space. If you need them back, verifying the game cache should trigger Steam to re-download them.