If LFS freezes for a while when a player leaves garage, it's most likely the texture loading problem. (LFS probably does drawing and loading in the same thread, so the drawing has to wait until the loading is finished). Try a fresh install of LFS with no addons and only 512x512 downloadable skins. Turning off any tools that might be accessing HDD (BitTorrent downloaders, defragmenters and "speedup" tools of all kind,...) might help too.