Testing perfs on an old 8-core laptop:
BZ2 : 2 Mb, average decompression time: 5514 ms
LZ4 -9: 9 Mb, average decompression time: 837 ms
RAW : 704 Mb, average decompression time: 368 ms
Other LZ4 options don't help: -1 is slower and bigger, --favor-decSpeed does not do anything
To enable:
apt install liblz4-dev
cd client/resources/hardnested_tables
for i in *bz2; do bunzip2 $i; lz4 -9 --rm ${i%.bz2}; done