LZ4 is good engineering work, better than Google snappy (zippy) which itself was better than LZO (both have somewhat improved by looking at each other's code since then). The current best general purpose compressor for decompression speed is Oodle Selkie, but it is not open source. I don't if a fast compressor for Oodle Selkie exists - since it was developed for game assets, they don't care about compression speed.
It's amazing how something useful and innovative gets invented, and isn't so much as documented, let alone patented or published in a journal.