Complex sentence: Fasterfox is a Mozilla Firefox extension that provides an interface to tweak some performance related settings such as browser network connection, cache, timings, as well as provide an optional controversial feature which forces link prefetching.
Split into simpler sentences: Fasterfox is a Mozilla Firefox extension that provides an interface for tweaking some performance related settings, such as browser network connection, cache, and timings. The extension also provides an optional controversial feature which forces link prefetching.